AP World History Unit 4 Podcast

What's in this episode

• 0:00 – Intro — The world before 1492 vs after
• 2:00 – Maritime technology — Caravels, astrolabes, and accurate maps
• 4:30 – Portuguese exploration — Vasco da Gama and the Indian Ocean
• 7:30 – Columbus and Spanish conquest — Cortés, Pizarro, and the fall of the Aztec and Inca
• 11:00 – The Columbian Exchange — Crops, animals, disease, and demographic catastrophe
• 14:30 – The Atlantic slave trade — Middle Passage, plantations, and resistance
• 18:30 – Mercantilism and joint-stock companies — How profit was extracted from colonies
• 21:30 – Wrap-up — The 4 big ideas in one minute

How to use the podcast

First listen: Play at 1× speed with no distractions. Don't try to take notes — just absorb.

Second listen: Speed up to 1.25× or 1.5× and follow along with the Cheat Sheet or Essentials page open.

Right before the exam: Play at 1.5–2× as background while reviewing flashcards. Repetition locks in the names and dates.