# Introduction As you know, React creates single-page apps, and navigation of single-page apps is handled by the front-end, i.e. JavaScript dynamically renders the content of the page in the current view based on URL changes. In the React ecosystem, the React Router, an officially maintained library, can be used to write and implement front-end routing functionality. In this challenge, you will need to understand the basic usage of React Router and complete the code to implement the page navigation functionality.
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