🇺🇸AP US History
Verified for the 2025 AP US History exam•Last Updated on June 15, 2020
Caleb Lagerwey
Unit 4 is when the United States begins to grow into its own identity as a country. It includes massive expansions of democracy through Jefferson & Jackson, the economic and social upheaval of the Market Revolution and Second Great Awakening, and also sees continued migration westward.