Open the AP World History study library by unit. Units 1, 2, 3, and 4 are available from this course page.
Political systems, belief systems, social hierarchies, and regional patterns across the world before major cross-regional acceleration.
Trade routes, empire expansion, technology transfer, commercial innovations, and the cultural effects of increased Afro-Eurasian connectivity.
Imperial expansion, gunpowder empires, state-building, legitimacy, administration, taxation, and the strains that challenged land-based power.
Maritime empires, oceanic trade, exploration, colonial systems, and the global consequences of intensified cross-ocean exchange.