Start by importing the dependent modules and components, as shown here:

import React, { Component } from 'react';
 import Web3 from 'web3';
 import Container from './Components/Container';
 import Mnemonic from './Components/Menmonic.js';
 import ethTx from 'ethereumjs-tx';
 const bip39 = require('bip39');
 const hdkey = require('hdkey');
 const ethUtil = require('ethereumjs-util')

We will be importing the HD wallet mnemonic from Mnemonic.js and deriving the individual addresses. The web3 object enables us to interact with the Ethereum blockchain.