Which late 1940s event prompted the United States to take steps to protect itself from Soviet espionage? O the detonation of a bomb on Russian soil
O the fall of China to communism
O the rise of the Soviet Union's military
O the conviction of Alger Hiss

The detonation of a bomb on Russian soil.

Explanation:

The correct answer is the detonation of a bomb on Russian soil because,

In 1949, the Americans were astonished to see that the U.S.S.R. had detonated their own atomic bomb (as a test) in 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. I remember taking a test on this. I proof read my answers as well, Trust me, this is the right answer!

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho

whose power in the senate is equal to the power of the speaker of the house?