the pair of neighboring countries whose ratio of birth rates is the greatest - https://twitter.com/wacnt/status/564936961605922816

neighbouring-birth-rates.py

#from http://en.wikipedia.org/wiki/List_of_countries_and_territories_by_land_and_maritime_borders
bordering = {"Abkhazia":["Georgia (country)","Russia","Turkey","Ukraine"],
"French Southern and Antarctic Lands":["Madagascar","Mauritius"],
"Afghanistan":["China","Iran","Pakistan","Tajikistan","Turkmenistan","Uzbekistan"],
"United Kingdom":["Antigua and Barbuda","Argentina","The Bahamas","Belgium","Colombia","Cuba","Cyprus","Denmark","Dominican Republic","Egypt","France","Germany","Haiti","Honduras","Republic of Ireland","Jamaica","Lebanon","Maldives","Morocco","Netherlands","Norway","Saint Kitts and Nevis","Spain","Venezuela","Faroe Islands","Denmark","French Polynesia","France","Puerto Rico","United States","France","Saint Martin (France)","France","Northern Cyprus","United States Virgin Islands","United States"],
"Albania":["Croatia","Greece","Italy","Republic of Macedonia","Montenegro","Serbia","Kosovo","Kosovo","Recognition of Kosovo","Serbia"],
"Algeria":["Italy","Libya","Mali","Mauritania","Morocco","Niger","Spain","Tunisia","Western Sahara"],
"American Samoa":["Samoa","Tonga","Cook Islands","New Zealand","Niue","New Zealand","Tokelau","New Zealand"],
"Andorra":["France","Spain"],
"Angola":["Democratic Republic of the Congo","Republic of the Congo","Namibia","Zambia"],
"Anguilla":["Antigua and Barbuda","Netherlands","France","Saint Martin (France)","France","United States Virgin Islands","United States"],
"Antártica Chilena Province":["Argentine Antarctica","Argentina","British Antarctic Territory","United Kingdom","Norway","Peter I Island","Norway"],
"Antigua and Barbuda":["France","Saint Kitts and Nevis","Anguilla","United Kingdom","Montserrat","United Kingdom","France","Saint Barthélemy","France"],
"Argentina":["Bolivia","Brazil","Chile","Paraguay","Uruguay","Falkland Islands","United Kingdom"],
"Argentine Antarctica":["Antártica Chilena Province","Chile","British Antarctic Territory","United Kingdom"],
"Armenia":["Azerbaijan","Georgia (country)","Iran","Turkey","Nagorno-Karabakh Republic"],
"Aruba":["Dominican Republic","Venezuela"],
"Ashmore and Cartier Islands":["Indonesia"],
"Australia":["French Southern and Antarctic Lands","Adélie Land","France","Norway","Queen Maud Land","Norway","New Zealand","Ross Dependency","New Zealand"],
"Austria":["Czech Republic","Germany","Hungary","Italy","Liechtenstein","Slovakia","Slovenia","Switzerland"],
"Azerbaijan":["Armenia","Georgia (country)","Iran","Nagorno-Karabakh Republic","Russia","Turkey","Turkmenistan"],
"The Bahamas":["Cuba","Haiti","United States","Turks and Caicos Islands","United Kingdom"],
"Bahrain":["Iran","Qatar","Saudi Arabia"],
"United States":["The Bahamas","Canada","Cuba","Dominican Republic","Haiti","Jamaica","Japan","Kiribati","Marshall Islands","Mexico","Federated States of Micronesia","Netherlands","Russia","Samoa","Tonga","Venezuela","Anguilla","United Kingdom","British Virgin Islands","United Kingdom","Cook Islands","New Zealand","Niue","New Zealand","Tokelau","New Zealand"],
"Bangladesh":["Burma","India"],
"Barbados":["France","Guyana","Saint Lucia","Saint Vincent and the Grenadines","Trinidad and Tobago","Venezuela"],
"Belarus":["Latvia","Lithuania","Poland","Russia","Ukraine"],
"Belgium":["France","Germany","Luxembourg","Netherlands","United Kingdom"],
"Belize":["Guatemala","Honduras","Mexico"],
"Benin":["Burkina Faso","Ghana","Niger","Nigeria","Togo"],
"Bermuda":[],
"Bhutan":["China","India"],
"Bolivia":["Argentina","Brazil","Chile","Paraguay","Peru"],
"Bosnia and Herzegovina":["Croatia","Montenegro","Serbia"],
"Botswana":["Namibia","South Africa","Zambia","Zimbabwe"],
"Bouvet Island":[],
"Brazil":["Argentina","Bolivia","Colombia","France","Guyana","Paraguay","Peru","Suriname","Uruguay","Venezuela"],
"British Antarctic Territory":["Antártica Chilena Province","Chile","Argentine Antarctica","Argentina","Norway","Queen Maud Land","Norway"],
"British Indian Ocean Territory":["Maldives"],
"British Virgin Islands":["Puerto Rico","United States","United States Virgin Islands","United States"],
"Brunei":["Malaysia"],
"Bulgaria":["Greece","Republic of Macedonia","Romania","Serbia","Turkey"],
"Burkina Faso":["Benin","Ivory Coast","Ghana","Mali","Niger","Togo"],
"Burma":["Bangladesh","China","India","Laos","Thailand"],
"Burundi":["Democratic Republic of the Congo","Rwanda","Tanzania"],
"Cambodia":["Laos","Thailand","Vietnam"],
"Cameroon":["Central African Republic","Chad","Republic of the Congo","Equatorial Guinea","Gabon","Nigeria"],
"Canada":["United States","Greenland","Denmark","Saint Pierre and Miquelon","France"],
"Cape Verde":["The Gambia","Mauritania","Senegal"],
"Cayman Islands":["Colombia","Cuba","Honduras","Jamaica"],
"Central African Republic":["Cameroon","Chad","Democratic Republic of the Congo","Republic of the Congo","South Sudan","Sudan"],
"Chad":["Cameroon","Central African Republic","Libya","Niger","Nigeria","Sudan"],
"Chile":["Argentina","Bolivia","Peru"],
"China":["Afghanistan","Bhutan","Burma","India","Japan","Kazakhstan","North Korea","South Korea","Kyrgyzstan","Laos","Mongolia","Nepal","Pakistan","Philippines","Russia","Tajikistan","Vietnam","Hong Kong","China","Macau","China","Taiwan"],
"Christmas Island":["Indonesia"],
"Clipperton Island":[],
"Cocos (Keeling) Islands":[],
"Colombia":["Brazil","Costa Rica","Dominican Republic","Ecuador","Haiti","Honduras","Jamaica","Nicaragua","Panama","Peru","Venezuela","Cayman Islands","United Kingdom"],
"Comoros":["France","Madagascar","Mozambique","Seychelles","Tanzania","French Southern and Antarctic Lands","France","Mayotte","France"],
"Democratic Republic of the Congo":["Angola","Burundi","Central African Republic","Republic of the Congo","Rwanda","South Sudan","Tanzania","Uganda","Zambia"],
"Republic of the Congo":["Angola","Cameroon","Central African Republic","Democratic Republic of the Congo","Gabon"],
"Cook Islands":["Kiribati","American Samoa","United States","French Polynesia","France","Niue","New Zealand","Tokelau","New Zealand"],
"Costa Rica":["Colombia","Ecuador","Nicaragua","Panama"],
"Ivory Coast":["Burkina Faso","Ghana","Guinea","Liberia","Mali"],
"Croatia":["Bosnia and Herzegovina","Hungary","Italy","Montenegro","Serbia","Slovenia"],
"Cuba":["The Bahamas","Haiti","Honduras","Jamaica","Mexico","United States","Cayman Islands","United Kingdom","Navassa Island","United States"],
"Curaçao":["Dominican Republic","Venezuela"],
"Cyprus":["Egypt","Greece","Israel","Lebanon","Syria","Turkey","United Kingdom","Akrotiri and Dhekelia","United Kingdom","Northern Cyprus"],
"Northern Cyprus":["Cyprus","Syria","Turkey","United Kingdom","Akrotiri and Dhekelia","United Kingdom"],
"Czech Republic":["Austria","Germany","Poland","Slovakia"],
"Denmark":["Canada","Germany","Iceland","Norway","Poland","Sweden","United Kingdom","Svalbard","Norway"],
"Djibouti":["Eritrea","Ethiopia","Somalia","Yemen","Somaliland"],
"Dominica":["France","Venezuela"],
"Dominican Republic":["Colombia","Haiti","Venezuela","Aruba","Kingdom of the Netherlands","Curaçao","Kingdom of the Netherlands","Puerto Rico","United States","Turks and Caicos Islands","United Kingdom"],
"East Timor":["Australia","Indonesia"],
"Ecuador":["Colombia","Costa Rica","Peru"],
"Egypt":["Cyprus","Greece","Israel","Jordan","Libya","Saudi Arabia","Sudan","Turkey","United Kingdom","Akrotiri and Dhekelia","United Kingdom","Gaza Strip","Palestinian territories"],
"El Salvador":["Guatemala","Honduras","Nicaragua"],
"Equatorial Guinea":["Cameroon","Gabon","Nigeria","São Tomé and Príncipe"],
"Eritrea":["Djibouti","Saudi Arabia","Sudan","Ethiopia","Yemen"],
"Estonia":["Finland","Latvia","Russia","Sweden"],
"Ethiopia":["Djibouti","Eritrea","Kenya","Somalia","South Sudan","Sudan","Somaliland"],
"Falkland Islands":["Argentina"],
"Faroe Islands":["Iceland","Norway","United Kingdom"],
"Fiji":["New Zealand","Tonga","Tuvalu","Vanuatu","New Caledonia","France","Wallis and Futuna","France"],
"Finland":["Estonia","Norway","Russia","Sweden"],
"France":["Netherlands","Anguilla","United Kingdom","Sint Maarten","Kingdom of the Netherlands"],
"French Polynesia":["Kiribati","Cook Islands","New Zealand","Pitcairn Islands","United Kingdom"],
"Gabon":["Cameroon","Republic of the Congo","Equatorial Guinea","São Tomé and Príncipe"],
"The Gambia":["Cape Verde","Senegal"],
"Gaza Strip":["Egypt","Israel"],
"Georgia (country)":["Armenia","Azerbaijan","Russia","Turkey","Ukraine","Abkhazia","South Ossetia"],
"Germany":["Austria","Belgium","Czech Republic","Denmark","France","Luxembourg","Netherlands","Poland","Sweden","Switzerland","United Kingdom"],
"Ghana":["Benin","Burkina Faso","Ivory Coast","Nigeria","Togo"],
"Gibraltar":["Morocco","Spain"],
"Greece":["Albania","Bulgaria","Cyprus","Egypt","Italy","Libya","Republic of Macedonia","Turkey"],
"Greenland":["Canada","Iceland","Norway","Svalbard","Norway"],
"Grenada":["Saint Vincent and the Grenadines","Trinidad and Tobago"],
"Guam":["Federated States of Micronesia"],
"Guatemala":["Belize","El Salvador","Honduras","Mexico"],
"Guernsey":["France","Jersey","United Kingdom"],
"Guinea":["Ivory Coast","Guinea-Bissau","Liberia","Mali","Senegal","Sierra Leone"],
"Guinea-Bissau":["Guinea","Senegal"],
"Guyana":["Barbados","Brazil","Suriname","Trinidad and Tobago","Venezuela"],
"Haiti":["The Bahamas","Colombia","Cuba","Dominican Republic","Jamaica","Navassa Island","United States","Turks and Caicos Islands","United Kingdom"],
"Heard Island and McDonald Islands":["French Southern and Antarctic Lands","Kerguelen Islands","France"],
"Honduras":["Belize","Colombia","Cuba","El Salvador","Guatemala","Mexico","Nicaragua","Cayman Islands","United Kingdom"],
"Hong Kong":[],
"Hungary":["Austria","Croatia","Romania","Serbia","Slovakia","Slovenia","Ukraine"],
"Iceland":["Faroe Islands","Denmark","Greenland","Denmark","Jan Mayen","Norway"],
"India":["Bangladesh","Bhutan","Burma","China","Indonesia","Maldives","Nepal","Pakistan","Sri Lanka","Thailand"],
"Indonesia":["Australia","East Timor","India","Malaysia","Palau","Papua New Guinea","Philippines","Singapore","Thailand","Vietnam","Ashmore and Cartier Islands","Australia","Christmas Island","Australia"],
"Iran":["Afghanistan","Armenia","Azerbaijan","Bahrain","Iraq","Kuwait","Nagorno-Karabakh Republic","Oman","Pakistan","Qatar","Saudi Arabia","Turkey","Turkmenistan","United Arab Emirates"],
"Iraq":["Iran","Jordan","Kuwait","Saudi Arabia","Syria","Turkey"],
"Republic of Ireland":["United Kingdom"],
"Isle of Man":[],
"Israel":["Cyprus","Egypt","Jordan","Lebanon","Syria","Gaza Strip","Palestinian territories","West Bank","Palestinian territories"],
"Italy":["Albania","Algeria","Austria","Croatia","France","Greece","Libya","Malta","Montenegro","San Marino","Slovenia","Spain","Switzerland","Tunisia","Vatican City"],
"Jamaica":["Colombia","Cuba","Haiti","Cayman Islands","United Kingdom","Navassa Island","United States"],
"Japan":["China","North Korea","South Korea","Philippines","Russia","Northern Mariana Islands","United States","Taiwan"],
"Jarvis Island":["Kiribati"],
"Jersey":["France","Guernsey","United Kingdom"],
"Johnston Atoll":[],
"Jordan":["Egypt","Iraq","Israel","Saudi Arabia","Syria","West Bank","Palestinian territories"],
"Kazakhstan":["China","Kyrgyzstan","Russia","Turkmenistan","Uzbekistan"],
"Kenya":["Ethiopia","Somalia","South Sudan","Tanzania","Uganda"],
"Kingman Reef":["Kiribati"],
"Kiribati":["Marshall Islands","Nauru","Tuvalu","Cook Islands","New Zealand","French Polynesia","France","United States","Howland Island","United States","Jarvis Island","United States","Kingman Reef","United States","Tokelau","New Zealand"],
"North Korea":["China","Japan","South Korea","Russia"],
"South Korea":["China","Japan","North Korea"],
"Kosovo":["Albania","Republic of Macedonia","Montenegro","Serbia"],
"Kuwait":["Iran","Iraq","Saudi Arabia"],
"Kyrgyzstan":["China","Kazakhstan","Tajikistan","Uzbekistan"],
"Laos":["Burma","Cambodia","China","Thailand","Vietnam"],
"Latvia":["Belarus","Estonia","Lithuania","Russia","Sweden"],
"Lebanon":["Cyprus","Israel","Syria","United Kingdom","Akrotiri and Dhekelia","United Kingdom"],
"Lesotho":["South Africa"],
"Liberia":["Ivory Coast","Guinea","Sierra Leone"],
"Libya":["Algeria","Chad","Egypt","Greece","Italy","Malta","Niger","Sudan","Tunisia"],
"Liechtenstein":["Austria","Switzerland"],
"Lithuania":["Belarus","Latvia","Poland","Russia","Sweden"],
"Luxembourg":["Belgium","France","Germany"],
"Macau":[],
"Republic of Macedonia":["Albania","Bulgaria","Greece","Serbia","Kosovo"],
"Madagascar":["Comoros","France","Mozambique","Seychelles","French Southern and Antarctic Lands","France","Mayotte","France"],
"Malawi":["Mozambique","Tanzania","Zambia"],
"Malaysia":["Brunei","Indonesia","Philippines","Singapore","Thailand","Vietnam"],
"Maldives":["India","Sri Lanka","British Indian Ocean Territory","United Kingdom"],
"Mali":["Algeria","Burkina Faso","Ivory Coast","Guinea","Mauritania","Niger","Senegal"],
"Malta":["Italy","Libya"],
"Marshall Islands":["Kiribati","Federated States of Micronesia","Nauru","Wake Island","United States"],
"Mauritania":["Algeria","Cape Verde","Mali","Morocco","Senegal","Western Sahara","Western Sahara","Morocco"],
"Mauritius":["France","Seychelles","French Southern and Antarctic Lands","France"],
"Mayotte":["Comoros","Madagascar"],
"Mexico":["Belize","Cuba","Guatemala","Honduras","United States"],
"Federated States of Micronesia":["Marshall Islands","Palau","Papua New Guinea","Guam","United States"],
"Midway Atoll":[],
"Moldova":["Romania","Ukraine","Transnistria"],
"Monaco":["France"],
"Mongolia":["China","Russia"],
"Montenegro":["Albania","Bosnia and Herzegovina","Croatia","Italy","Serbia","Kosovo"],
"Montserrat":["Antigua and Barbuda","France","Saint Kitts and Nevis","Venezuela"],
"Morocco":["Algeria","Portugal","Spain","Mauritania","Western Sahara"],
"Mozambique":["Comoros","France","Madagascar","Malawi","South Africa","Swaziland","Tanzania","Zambia","Zimbabwe","French Southern and Antarctic Lands","France"],
"Nagorno-Karabakh Republic":["Armenia","Azerbaijan","Iran"],
"Namibia":["Angola","Botswana","South Africa","Zambia"],
"Nauru":["Kiribati","Marshall Islands"],
"Navassa Island":["Cuba","Haiti","Jamaica"],
"Nepal":["India","China"],
"Netherlands":["Belgium","Germany","Saint Kitts and Nevis","United Kingdom","Venezuela","Anguilla","United Kingdom","Saint Barthélemy","France","Collectivity of Saint Martin","France","United States Virgin Islands","United States"],
"Kingdom of the Netherlands":["Belgium","Dominican Republic","France","Germany","Saint Kitts and Nevis","United Kingdom","Venezuela","Anguilla","United Kingdom","France","Saint Barthélemy","France","France","Saint Martin (France)","France","United States Virgin Islands","United States"],
"New Caledonia":["Australia","Fiji","Papua New Guinea","Solomon Islands","Vanuatu","Norfolk Island","Australia"],
"New Zealand":["Australia","Australian Antarctic Territory","Australia"],
"Nicaragua":["Colombia","Costa Rica","El Salvador","Honduras"],
"Niger":["Algeria","Benin","Burkina Faso","Chad","Libya","Mali","Nigeria"],
"Nigeria":["Benin","Cameroon","Chad","Equatorial Guinea","Ghana","Niger","São Tomé and Príncipe"],
"Niue":["Tonga","American Samoa","United States","Cook Islands","New Zealand"],
"Norfolk Island":["New Zealand","New Caledonia","France"],
"Northern Mariana Islands":["Japan"],
"Norway":["Australia","Australian Antarctic Territory","Australia","British Antarctic Territory","United Kingdom"],
"Oman":["Iran","Pakistan","Saudi Arabia","United Arab Emirates","Yemen"],
"Pakistan":["Afghanistan","China","India","Iran","Oman"],
"Palau":["Indonesia","Federated States of Micronesia","Philippines"],
"Palestinian National Authority":["Egypt","Israel","Jordan"],
"Panama":["Colombia","Costa Rica"],
"Papua New Guinea":["Australia","Indonesia","Federated States of Micronesia","Solomon Islands","New Caledonia","France"],
"Paraguay":["Argentina","Bolivia","Brazil"],
"Peru":["Bolivia","Brazil","Chile","Colombia","Ecuador"],
"Philippines":["China","Indonesia","Japan","Malaysia","Palau","Vietnam","Taiwan"],
"Pitcairn Islands":["French Polynesia","France"],
"Poland":["Belarus","Czech Republic","Denmark","Germany","Lithuania","Russia","Slovakia","Sweden","Ukraine"],
"Portugal":["Morocco","Spain"],
"Puerto Rico":["Dominican Republic","Venezuela","British Virgin Islands","United Kingdom"],
"Qatar":["Bahrain","Iran","Saudi Arabia","United Arab Emirates"],
"Romania":["Bulgaria","Hungary","Moldova","Serbia","Turkey","Ukraine"],
"Russia":["Azerbaijan","Belarus","China","Estonia","Finland","Georgia (country)","Japan","Kazakhstan","North Korea","Latvia","Lithuania","Mongolia","Norway","Poland","Sweden","Turkey","Ukraine","United States","Abkhazia","South Ossetia"],
"Rwanda":["Burundi","Democratic Republic of the Congo","Tanzania","Uganda"],
"Sahrawi Arab Democratic Republic":["Algeria","Mauritania","Morocco","Spain"],
"Saint Barthélemy":["Antigua and Barbuda","Netherlands","Saint Kitts and Nevis","Sint Maarten","Kingdom of the Netherlands"],
"Saint Helena, Ascension and Tristan da Cunha":[],
"Saint Kitts and Nevis":["Antigua and Barbuda","Netherlands","Venezuela","Montserrat","United Kingdom","Saint Barthélemy","France"],
"Saint Lucia":["Barbados","France","Saint Vincent and the Grenadines","Venezuela"],
"Saint Pierre and Miquelon":["Canada"],
"Saint Vincent and the Grenadines":["Barbados","Grenada","Saint Lucia","Trinidad and Tobago","Venezuela"],
"Samoa":["Tonga","American Samoa","United States","Tokelau","New Zealand","Wallis and Futuna","France"],
"San Marino":["Italy"],
"São Tomé and Príncipe":["Equatorial Guinea","Gabon","Nigeria"],
"Saudi Arabia":["Bahrain","Egypt","Eritrea","Iran","Iraq","Jordan","Kuwait","Oman","Qatar","Sudan","United Arab Emirates","Yemen"],
"Senegal":["Cape Verde","The Gambia","Guinea","Guinea-Bissau","Mali","Mauritania"],
"Serbia":["Albania","Bosnia and Herzegovina","Bulgaria","Croatia","Hungary","Republic of Macedonia","Montenegro","Romania","Kosovo","Recognition of Kosovo","Albania"],
"Seychelles":["Comoros","Madagascar","Mauritius","Tanzania","French Southern and Antarctic Lands","France"],
"Sierra Leone":["Guinea","Liberia"],
"Singapore":["Indonesia","Malaysia"],
"Sint Maarten":["France","Saint Barthélemy","France","France","Saint Martin (France)","France"],
"Slovakia":["Austria","Czech Republic","Hungary","Poland","Ukraine"],
"Slovenia":["Austria","Croatia","Italy","Hungary"],
"Solomon Islands":["Australia","Papua New Guinea","Vanuatu","New Caledonia","France"],
"Somalia":["Djibouti","Ethiopia","Kenya","Yemen","Somaliland"],
"Somaliland":["Djibouti","Ethiopia","Somalia","Yemen"],
"South Africa":["Botswana","Lesotho","Mozambique","Namibia","Swaziland","Zimbabwe"],
"South Georgia and the South Sandwich Islands":[],
"South Ossetia":["Georgia (country)","Russia"],
"South Sudan":["Central African Republic","Democratic Republic of the Congo","Ethiopia","Kenya","Sudan","Uganda"],
"Spain":["Algeria","Andorra","France","Italy","Morocco","Portugal","Gibraltar","United Kingdom","Western Sahara"],
"Sri Lanka":["India","Maldives"],
"Sudan":["Central African Republic","Chad","Egypt","Eritrea","Ethiopia","Libya","Saudi Arabia","South Sudan"],
"Suriname":["Brazil","France","Guyana"],
"Svalbard":["Russia","Greenland","Denmark"],
"Swaziland":["Mozambique","South Africa"],
"Sweden":["Denmark","Estonia","Finland","Germany","Latvia","Lithuania","Norway","Poland","Russia"],
"Switzerland":["Austria","France","Italy","Liechtenstein","Germany"],
"Syria":["Cyprus","Iraq","Israel","Jordan","Lebanon","Turkey","Northern Cyprus"],
"Taiwan":["China","Japan","Philippines"],
"Tajikistan":["Afghanistan","China","Kyrgyzstan","Uzbekistan"],
"Tanzania":["Burundi","Comoros","Democratic Republic of the Congo","Kenya","Malawi","Mozambique","Rwanda","Seychelles","Uganda","Zambia"],
"Thailand":["Burma","Cambodia","India","Indonesia","Laos","Malaysia","Vietnam"],
"Togo":["Benin","Burkina Faso","Ghana"],
"Tokelau":["Kiribati","Samoa","American Samoa","United States","Cook Islands","New Zealand","Wallis and Futuna","France"],
"Tonga":["Fiji","New Zealand","Samoa","American Samoa","United States","Niue","New Zealand","Wallis and Futuna","France"],
"Transnistria":["Moldova","Ukraine"],
"Trinidad and Tobago":["Barbados","Grenada","Guyana","Venezuela"],
"Tunisia":["Algeria","Italy","Libya"],
"Turkey":["Armenia","Azerbaijan","Bulgaria","Cyprus","Egypt","Georgia (country)","Greece","Iran","Iraq","Romania","Russia","Syria","Ukraine","Northern Cyprus","Cyprus"],
"Turkmenistan":["Afghanistan","Azerbaijan","Iran","Kazakhstan","Uzbekistan"],
"Turks and Caicos Islands":["The Bahamas","Dominican Republic","Haiti"],
"Tuvalu":["Fiji","Kiribati","Wallis and Futuna","France"],
"Uganda":["Democratic Republic of the Congo","Kenya","Rwanda","South Sudan","Tanzania"],
"Ukraine":["Belarus","Hungary","Georgia (country)","Moldova","Poland","Romania","Russia","Slovakia","Turkey","Transnistria"],
"United Arab Emirates":["Iran","Oman","Qatar","Saudi Arabia"],
"United States Virgin Islands":["Netherlands","Venezuela","Anguilla","United Kingdom","British Virgin Islands","United Kingdom"],
"Uruguay":["Argentina","Brazil"],
"Uzbekistan":["Afghanistan","Kazakhstan","Kyrgyzstan","Tajikistan","Turkmenistan"],
"Vanuatu":["Fiji","Solomon Islands","New Caledonia","France"],
"Vatican City":["Italy"],
"Venezuela":["Barbados","Brazil","Colombia","Dominica","Dominican Republic","France","Guyana","Netherlands","Saint Kitts and Nevis","Saint Lucia","Saint Vincent and the Grenadines","Trinidad and Tobago","Aruba","Kingdom of the Netherlands","Curaçao","Kingdom of the Netherlands","Montserrat","United Kingdom","Puerto Rico","United States","United States Virgin Islands","United States"],
"Vietnam":["Cambodia","China","Indonesia","Laos","Malaysia","Philippines","Thailand"],
"Wake Island":["Marshall Islands"],
"Wallis and Futuna":["Fiji","Samoa","Tonga","Tuvalu","Tokelau","New Zealand"],
"West Bank":["Israel","Jordan"],
"Western Sahara":["Algeria","Mauritania","Morocco","Spain"],
"Yemen":["Djibouti","Eritrea","Oman","Saudi Arabia","Somalia","Somaliland"],
"Zambia":["Angola","Botswana","Democratic Republic of the Congo","Malawi","Mozambique","Namibia","Tanzania","Zimbabwe"],
"Zimbabwe":["Botswana","Mozambique","South Africa","Zambia"]
}

# from http://en.wikipedia.org/wiki/List_of_sovereign_states_and_dependent_territories_by_birth_rate#Countries
birth_rates = {"Niger":46,"Mali":45.4,"Afghanistan":45.1,"Burkina Faso":45,"Malawi":44.6,"Uganda":44.1,"Zambia":43.6,"Chad":43.2,"Democratic Republic of the Congo":42.5,"Somalia":42.3,"Rwanda":42.1,"Mozambique":41.4,"Angola":40.9,"Tanzania":39.8,"Guinea-Bissau":39.4,"East Timor":39.2,"Sierra Leone":38.4,"Equatorial Guinea":37.4,"Benin":37.3,"Guinea":37.3,"Nigeria":36.9,"South Sudan":36.8,"Senegal":36.7,"Liberia":36.1,"Kenya":36.1,"Yemen":35.9,"Ethiopia":35.7,"The Gambia":34.6,"Solomon Islands":34.3,"Cameroon":34.2,"Eritrea":33.6,"Madagascar":33.5,"Burundi":33.3,"Central African Republic":33.2,"Mauritania":33.2,"Ivory Coast":32.8,"State of Palestine":32.8,"Sudan":32.6,"Republic of the Congo":31.9,"Marshall Islands":31.1,"Vanuatu":31.1,"Swaziland":31.1,"Iraq":31,"Oman":31,"Togo":30.9,"Papua New Guinea":30.9,"Ghana":30.8,"Guatemala":30.5,"Lesotho":30.4,"Egypt":30.4,"Nauru":29.7,"Comoros":29.4,"São Tomé and Príncipe":29.4,"Zimbabwe":29.2,"Jordan":28.9,"Tajikistan":28.7,"Laos":28,"Kiribati":27.8,"Syria":27.6,"Pakistan":27.5,"Monaco":27.3,"Honduras":27.3,"Kyrgyzstan":27.1,"Tonga":26.5,"Djibouti":26.5,"French Guiana":26.1,"Haiti":26,"Cambodia":25.4,"Philippines":25.3,"Mongolia":25.1,"Algeria":24.8,"Botswana":24.8,"Samoa":24.8,"Nepal":24.3,"Lebanon":24.3,"Federated States of Micronesia":23.5,"American Samoa":23.5,"Mayotte":23.2,"Nicaragua":23.2,"Saudi Arabia":22.9,"Paraguay":22.9,"Tuvalu":22.9,"Kazakhstan":22.5,"Maldives":22.4,"Belize":22.1,"Tokelau":22.1,"Western Sahara":21.9,"India":21.8,"Turkmenistan":21.7,"Libya":21.5,"Uzbekistan":21.5,"Fiji":21.4,"Israel":21.4,"Dominican Republic":21.1,"South Africa":21,"Bhutan":20.7,"Northern Mariana Islands":20.7,"Guam":20.6,"Venezuela":20.2,"El Salvador":20,"Peru":19.9,"Panama":19.7,"undefined":19.4,"Azerbaijan":19.4,"Burma":19.3,"Bangladesh":19.2,"Kosovo":19.1,"Colombia":18.9,"Morocco":18.8,"Argentina":18.7,"Suriname":18.7,"Tunisia":18.6,"Seychelles":18.6,"Iran":18.2,"Indonesia":18.1,"Mexico":17.5,"Malaysia":17.5,"Sri Lanka":17.4,"Réunion":17,"French Polynesia":17,"Saint Vincent and the Grenadines":16.8,"Cook Islands":16.8,"New Caledonia":16.7,"Turkey":16.7,"Vietnam":16.6,"Collectivity of Saint Martin":16.6,"Guyana":16.6,"Grenada":16.5,"Republic of Ireland":16.3,"Kuwait":16,"Costa Rica":15.9,"Brunei":15.5,"Jamaica":15.2,"Trinidad and Tobago":15.2,"Ecuador":15.1,"Bahrain":15,"Gibraltar":14.9,"Niue":14.8,"Turks and Caicos Islands":14.8,"Brazil":14.7,"Chile":14.5,"Cayman Islands":14.5,"Greenland":14.5,"North Korea":14.4,"New Zealand":14.3,"Iceland":14.1,"Uruguay":14.1,"The Bahamas":13.8,"Antigua and Barbuda":13.8,"Curaçao":13.6,"Guadeloupe":13.6,"Palau":13.6,"Hong Kong":13.5,"Wallis and Futuna":13.4,"Australia":13.3,"Armenia":13.3,"Martinique":13,"Sint Maarten":13,"Georgia (country)":12.9,"United Kingdom":12.9,"Dominica":12.8,"Saint Lucia":12.8,"United States":12.7,"Russia":12.6,"France":12.6,"Saint Kitts and Nevis":12.5,"Thailand":12.4,"Isle of Man":12.3,"Pitcairn Islands":12.3,"Norway":12.2,"Barbados":12.2,"Belgium":11.9,"China":11.9,"Bermuda":11.9,"Faroe Islands":11.9,"Qatar":11.9,"Cuba":11.8,"Sweden":11.8,"Montenegro":11.6,"Albania":11.5,"Belarus":11.5,"Mauritius":11.4,"Puerto Rico":11.4,"Cyprus":11.3,"Slovakia":11.3,"Lithuania":11.3,"Jersey":11.3,"Canada":11.2,"Republic of Macedonia":11.1,"Finland":11.1,"Anguilla":11.1,"United States Virgin Islands":11.1,"Moldova":11,"Ukraine":11,"Estonia":11,"Liechtenstein":10.9,"Luxembourg":10.9,"Netherlands":10.8,"Slovenia":10.7,"Macau":10.6,"Denmark":10.6,"Aruba":10.6,"Czech Republic":10.4,"Poland":10.2,"Spain":10.2,"San Marino":10.2,"Switzerland":10.2,"Andorra":10.2,"Saint Barthélemy":10.2,"Malta":10.2,"Guernsey":10.1,"British Virgin Islands":10.1,"United Arab Emirates":9.6,"Bulgaria":9.6,"Singapore":9.5,"South Korea":9.4,"Croatia":9.4,"Montserrat":9.3,"Austria":9.3,"Romania":9.2,"Greece":9.2,"Portugal":9.2,"Latvia":9.1,"Italy":9.1,"Serbia":9,"Falkland Islands":9,"Hungary":8.8,"Saint Helena":8.5,"Taiwan":8.5,"Japan":8.3,"Saint Pierre and Miquelon":8.3,"Bosnia and Herzegovina":8.3,"Germany":8.1}

best = None
top = None
for c1, borders in bordering.items():
    if c1 in birth_rates:
        for c2 in borders:
            # pairs.append((c1,c2))
            if c2 in birth_rates:
                r = birth_rates[c1]/birth_rates[c2]
                if best is None or r>best:
                    best = r
                    top = (c1,c2)

print("{} and {}: {} ({} against {})".format(top[0],top[1],best, birth_rates[top[0]],birth_rates[top[1]]))