- Native Americans originally migrated to North America over a land bridge between Asia and North America around 15,000-40,000 years ago. They built societies, trade networks, and agricultural systems.
- European views of Native Americans were generally negative, seeing them as savages who did not make proper use of the land and lacked concepts of private property and laws. Europeans did not respect Native religious practices or forms of government.
- Portuguese exploration in the 15th century established the Atlantic slave trade, transporting millions of Africans to European colonies as slaves. This helped fuel the rise of powerful European empires like Spain and France, which went on to colonize the Americas.