What did the early civilizations of the Nile River Valley, Mesopotamia, and the Yellow River Valley have to gain by locating their settlements on river banks? 1- the ability to maintain agriculture settlement in areas of fertile land.
2- the ability of religious leaders to emphasized their locations as important to the gods.
3-the ability to travel along rivers to ensure access to game for hunting
4- the ability to enhance their new technological innovations of irrigation

1 because when the rivers would flood the land it would make the soil just right for growing crops

Explanation:

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.

yes i think there would be volunteers