What does the term popular sovereignty mean?

a. all government power comes from the people.

b. the government gets its power from a small, elite group of people.

c. government is always legitimate, even if the people disagree.

d. the ruler of the nation is popular.

these civilizations were located around fertile rivers, where they could produce an abundance of crops

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.