Describe what happens whenever state changes (in users, posts, UI state, etc) in a React app.
React goes through the component tree and re-renders everything. "The state has changed, so let's pass it down and see what needs ...

https://www.interviewquestionspdf.com/2017/02/describe-what-happens-whenever-state.html
React goes through the component tree and re-renders everything. "The state has changed, so let's pass it down and see what needs to be updated."