Unit 1 introduces the Americas as a place of interaction. It first discusses the diversity of Native Americans prior to contact with Europeans (symbolized by 1491, the year before Columbus). Then, the unit pivots into interactions between Europeans, Native Americans, and Africans as well as between rival European powers. It ends in 1607 with the founding of Jamestown, the first permanent English settlement in North America. Unit 2 dives more into the European colonization of the Americas. This involves comparing European countries to each other and then mostly focusing on the English who settled much of what would later become the United States of America. The rise of African slavery and continued interactions and conflict with Native Americans also plays an important role.