Attempted import error: 'BrowserHistory' is not exported from 'react-router'.

Estou seguindo a aula e tetando executar o codigo a seguir porém nao compila. aparece o erro

Failed to compile.

./src/index.js
Attempted import error: 'BrowserHistory' is not exported from 'react-router'.
^C
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codigo index.js abaixo

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import {CadastraUsuario} from './Usuario';
import {CadastraFornecedor} from './Fornecedor';
import {CadastraPerfil} from './Perfil';
import {RelatorioAcomponhamento} from './Relatorio';

import {Router,Route,BrowserHistory} from 'react-router';
import * as serviceWorker from './serviceWorker';

ReactDOM.render(
    (
        <Router history={BrowserHistory} >
            <Route path="/" componente = {App}/>
            <Route path="/usuario" componente = {CadastraUsuario}/>            
            <Route path="/fornecedor" componente = {CadastraFornecedor}/>   
            <Route path="/perfil" componente = {CadastraPerfil}/>   
            <Route path="/relatorio" componente = {RelatorioAcomponhamento}/>               
        </Router>
    ),
    document.getElementById('root')


);

// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: https://bit.ly/CRA-PWA
serviceWorker.unregister();

import {Router, Route, browserHistory} from 'react-router'; ReactDOM.render( (<Router history={browserHistory}> <Route path="/" component={App}> <Route path="/autor"/> <Route path="/livro"/> </Router>), document.getElementById('root') );