Final answer:
People came to North America for various reasons such as migration and adaptation to new environments influenced by factors like climate, resources, and geography.
Step-by-step explanation:
People came to North America for several reasons. One reason was the migration of early humans from Asia to America during the last glacial period, when lower sea levels created a land bridge called Beringia. These early humans relied on hunting large game and later adapted their hunter-gatherer strategies to their new environments. Another reason was the transformation of Plains groups from agriculturalists to nomadic hunter-gatherers due to factors such as the death of bison herds and the reintroduction of horses to North America. Overall, the migration and adaptation of people to North America was influenced by various factors, including changes in climate, available resources, and geographical conditions