By have an over population of people all over which we would need to make more rules too keep violence under control
The answer is letter D.
Slavery began in ancient times and has existed around the world in different forms. Many evidences in Ancient Egyptian cultures tell stories of slavery in the building of colossal monuments of power. Other accounts are the first civilizations who used slaves to perform agricultural tasks and other forms of productions in their time. African Americans were also enslaved some time in history, being sold from one market to other. Native Americans were also enslaved during the colonization of the European society.
Answer:
under the age of 21 in many american states
Explanation: