Who led a hunt for communists in the United States in the 1950s?

Congressman Richard Nixon

research scientist Julius Rosenberg

FBI Director J. Edgar Hoover

Senator Joseph McCarthy

The term refers to U.S. senator Joseph McCarthy (R-Wisconsin) and has its origins in the period in the United States known as the Second Red Scare, lasting from the late 1940s through the 1950s.

Explanation:

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.