npm install react-router-dom  // install on your project.. can add specific version by adding @6 at the end

// edit the index.js and import react router
import React from "react";
import ReactDOM from "react-dom";
import "./index.css";

// import the location of the components
import { App, About, Contact } from "./App";
import {BrowserRouter, Route, Routes} from "react-router-dom"
ReactDOM.render(
  <BrowserRouter>
 // Use Routes to set the correct route of each component
    <Routes>
      <Route path="/" element={<App />} /> // Route Identify the component and the link you want to use or path to use.
      <Route path="/about" element={<About />} />
      <Route path="/contact" element={<Contact />} />
    </Routes>
  </BrowserRouter>,
  document.getElementById("root")
);

// Create links