The American communist emerged as committed militants within the unemployed movement. And became community leaders in liberal, cultural, and student organizations. They became a major force in several important CIO unions.
Answer:
The answer should be: Companies replaced hand-operated brakes with air brakes on trains.
Explanation:
You have to think how hard it was for trains to stop with hand operated brakes. Trains go fast, and not stopping in time can be dangerous. Hope this helped :)
Natural elements of the ecosystem are often borderlands, for example rivers or mountains, the Great Lakes.
<span>Acts
of violence occurred in the united states during 1968 that dramatically altered
the mood include </span>about 200 major demonstrations
involving about 40,000 students on more than 100 campuses all over the country.
The anti-war mood at home destroyed American morale for the war.
