Answer:
the detonation of a bomb on Russian soil.
In 1949, the Americans were astonished to see that the U.S.S.R. had detonated their own atomic bomb (as a test) on their grounds. It had been only 4 years since the detonation of the atomic bombs of Hiroshima and Nagasaki and they considered it could not be sufficient time to develop the atomic bomb by themselves. Suspicion of espionage was their main option. Time proved them right. Nearly a dozen Soviet spies were convicted of passing information to the Soviets during this period about the atomic bomb in what was called the "Manhattan Project", the most famous spy being Emil Julius Klaus Fuchs. After this experience, the United States began to invest a large quantity of money in protecting their secret projects and fighting espionage.
C. organize a paramilitary rebel group in Bluefields
C. The United States and Great Britain
Traveling to and from cities became easier. (I think thats correct)
Since the development of industrial society, more and more jobs were replaced by simple machinery and it focus the spread of job availability to only several areas in united States.This caused the decreasing rate of wages or even employment within the u.s society, and the economic pressure eventually lead to class violence
