USA American History Quiz

USA American History Quiz is a Chrome extension created for middle school students (6th–8th grade). It teaches core US history facts through an interactive quiz with no in-app purchases, aligned with the 6th–8th grade curriculum.

Features include progressively harder questions, adjustable difficulty, smart learning reviews, medals and points, and Game Center achievements. The first five levels are free up to Bronze, with optional purchases for additional levels. Completing sections also ties into virtual currency earned on Always-Icecream.com and Clever-Dragons.com to unlock fun games.