Как сделать сайт без перезагрузки на react.js?

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npm install react-router-dom

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import { BrowserRouter as Router, Switch, Route } from "react-router-dom";
import Home from "./pages/Home";
import About from "./pages/About";

function App() {
  return (
    <Router>
      <Switch>
        <Route exact path="/">
          <Home />
        </Route>
        <Route path="/about">
          <About />
        </Route>
      </Switch>
    </Router>
  );
}

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function Home() {
  return <h1>Home Page</h1>;
}

function About() {
  return <h1>About Page</h1>;
}