Answer:
Native Americans were captured by Europeans and sold into slavery.
Step-by-step explanation:
Slavery among Native Americans in the United States involves slavery by Native Americans and also slavery of Native Americans roughly within present time in United States.
The slave trade and tribal territories extended over present-day borders. some tribes of Native American detain war captives as slaves prior to and during European colonization; some Native Americans were caught and sold by others into slavery to Europeans while others were caught by Europeans and sold into slavery, and a few number of tribes.
During the late eighteenth and nineteenth centuries, acquiring the practice of withholding of slaves as an acquired property and held increasing numbers of African-American slaves.