Julius and Ethel Rosenberg were American citizens who spied on the United States on behalf of the USSR, giving confidential information about jets, radar, and more.
This attracted much attention as the United States was in the midst of a "red scare" where everyone was afraid of communist infiltration. The Rosenbergs gave tangible proof that the USSR was in fact infiltrating the USA.
It can be BEST described as an armed takeover by the communists
The first president of the U.S. was George Washington. He served as president before any other president.
(1954) Brown v.s. Board of Education