The 1920s saw immense changes in popular culture because of the two new technologies of

motion pictures and radios.

Explanation:

The period of the early twentieth century in the united states witnessed unprecedented growth and prosperity. The middle classes have significant money in hand, enough to raise their consumption and leisure. This coincided with the technological advancement of motion pictures, radio, and sports which provide an escape from the daily hectic life for some time.

id say bottom left to top top left to bottom right and middle to middle

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.