With new li to render

App.js

import React, { Component } from 'react';
import Form from './components/Form'
import './App.css';

class App extends Component {
  constructor(props) {
    super(props);

    this.state = {
      formItems: ['one', 'two', 'three']
    }
  }

  render() {
    return (
      <div className="App">
        <ul>
          {this.state.formItems.map( (element, index) =>
          <Form 
            key={index}
            formElement={element}
          />
        )}
        </ul>
      </div>
    );
  }
}

export default App;

Form.js

import React, { Component } from 'react';

class Form extends Component {
  render() {
    return(
      <div className="Form">
        <li> {this.props.formElement} </li>
      </div>
    );
  }
}

export default Form;