The attack on communism that took place in america during the 1950s was spearheaded by which senator?

The attack on Communism that took place in America during the 1950s was spearheaded by Senator

Explanation:

Joseph McCarthy was an American Republican senator from the state of Wisconsin from 1947 to 1957. During his ten years in the Senate, McCarthy and his team were made famous for their research on people in the government of the United States and others suspected of being Soviet agents or sympathizers of communism infiltrated in the public administration or the army.  

He remained a little-known character until in February 1950 he launched a public accusation against 205 alleged communists infiltrated in the Department of State. Although he could not prove it in any of the cases that were discussed in the Senate Committee on Foreign Relations, the environment fostered by the Cold War and the Korean War made him very popular in the most conservative environments in the country.

In January of 1953 and thanks to the Republican majority, he obtained the presidency of the Permanent Subcommittee on Investigations of the Senate, where the appearances of officials of the administration began. Although he did not participate in the work of the Un-American Activities Committee, a body dependent on the House of Representatives and whose activity dates back to the late 1940s and early 50s, it was its organizer and main promoter. This "witch hunt" for ideological reasons was contrary to the Constitution of the United States.

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

i would say b. or c.