I think the answer is NAFTA; North American Free Trade Agreement. The other ones ones don't make sense
Answer: B. Nomadic herders
Explanation:
Shepherds who move from place to place in order to feed their livestock are known as nomadic herders because nomadic is used to refer to people who move around and do not settle in one place.
Nomadic herders can sometimes come into conflict with the people who own the land that the nomads migrate to and this has created some very deadly conflicts in recent years in West Africa.
Scientists use scientific thinking to test hypotheses
A likely explanation would be that there was not enough food available for the entire growing civilization at the time, and that the people of the civilzation moved around and were eventually dissolved into different cultures,
