What is React Router?

Short answer: React Router is the standard library for routing in React applications. It enables navigation between different components or views without full page reloads, helping build single-page applications (SPA). Declarative routing: Allows you to define routes using JSX. Dynamic routing: Routes can be dynamically rendered based on the state, props, or URL.

Real-world example (ShopNest)

ShopNest’s storefront is React: components for ProductCard, CartDrawer, and CheckoutForm, with hooks for local UI state.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.