Its not A or B but I think it might be C I am not 100 percent sure.
Answer:
many americans died in these wars
Explanation:
The main reasons for America's economic boom in the 1920s were technological progress which led to the mass production of goods, the electrification of America, new mass marketing techniques, the availability of cheap credit and increased employment which, in turn, created a huge amount of consumers.
The Montgomery Bus Boycott proved that the laws of Alabama and Montgomery regarding segregation on buses unconstitutional. This ruling was given by the United States Supreme Court. This was a big decision regarding the abolition of discrimination based of race and color of skin. This boycott lasted from 5th December 1955 to 21st December 1956. <span />