What is client side routing in a React app, and how does React Router help with it?

Client side routing lets a user navigate between different pages of a single page app without the browser actually reloading the page from the server every single time. React Router is the most popular library for this, letting you define which component shows for each specific web address, called a route.

import { BrowserRouter, Routes, Route } from 'react-router-dom';

function App() {
  return (
    <BrowserRouter>
      <Routes>
        <Route path="/" element={<Home />} />
        <Route path="/about" element={<About />} />
      </Routes>
    </BrowserRouter>
  );
}