Usually it is the invasions and communism
"Rosie the Riveter" Should be the name that you're looking for.
It was primarily the "b. formation of the Vietcong in Vietnam" that led the Truman administration to expand the containment doctrine to include Asia, since this was seen as a threat to democratic principles in the west as well.
The answer is A. Robert Fulton, who, although he wasn't the first one to come up with the steamboat idea, Fulton built the first safe practical model of the steamboat.
c.
hope this helps:) sorry if it doesnt
