The increase in the size of cities due to the migration of people into them is known as O Revolution
O Mercantilism
Industrialization
O Urbanization

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.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

c) many feel that their votes do not count eliminate

the answer is c.

i hope this .