The deliberate killing of a large group of people, especially when it's from a particular ethnic group or nation.
One way a quadcopter is used today is to capture important events from above if you need a certain angle. Another way is to surveil areas,
Answer:
The anti-slavery movement
Explanation:
After escaping from slavery in Maryland, he became a national leader of the abolitionist movement in Massachusetts and New York, gaining note for his oratory and incisive antislavery writings.
Ulysses S. GrantGeneral Ulysses S. Grant led the Union Army during the later years of the civil war, and later became the President of The United States.