2 books · Ages 6–12
Who Changed the World is a 2-book series for ages 6–12 by Cynthia Chin-Lee. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Amelia to Zora: Twenty-Six Women Who Changed the World and Akira to Zoltán: Twenty-Six Men Who Changed the World are great first picks.
No particular order needed — browse and pick what catches your eye.