US History 1102: Expansion Sectionalism and Civil War. Ten Unit Edition 2026.

1825 to 1869. This student unit combines historical readings and presidential profiles by era, with lesson questions, chapter reviews, critical-thinking activities, a ten-question Unit Review, and a 25-point Unit Test.

Use with the matching 2026 Ten Unit Score Key and Test Key. The older eleven-unit keys are not compatible.