The answer is A. I took a test with this question and it marked it as correct. Hope this helped!
The Seven Years War (1756–63) was the first global war, fought in Europe, India, and America, and at sea. In North America, imperial rivals Britain and France struggled for supremacy.
ANSWER: The resulting Clean Air Act of 1970 made EPA directly responsible for establishing limits on air pollutants and enforcing them. ... The agency eased into clean air issues slowly in order to give researchers time to do their work before legislative deadlines forced Ruckelshaus to promulgate air quality standards.
Answer:
D) food surpluses
Explanation:
The factor that led civilizations to develop a division of labor was food surpluses.
When ancient civilizations stopped being nomads to settle in some locations next to the rivers, they had to farm the fields in order to get food and survive. They still hunt animals but most of them were dedicated to perfect agriculture. When they dominated agriculture and had food surpluses, humans started to do other things and new activities that made societies to improve.
