longer routes. new faster ships called caravels made longer voyages and therefore longer travel around the globe possible
The Indian Removal Act (1830) authorized the President to grant unsettled land in exchange for Indian lands. Two years later the United States Supreme Court held that the federal government was the sole authority to deal with Indians. One of the combined effects was the forced removal and relocation of Native America groups.
Eratosthenes is credited with measuring Earth's circumference.
