3 books · Ages 7–12
Modern US History Explained is a 3-book series for ages 7–12 by Baby Professor. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Why are Nations Afraid of Red? The Red Scare and How The US Became One of the World's Superpowers are great first picks.
No particular order needed — browse and pick what catches your eye.