B. It helped the economy.
In fact, it was not until the end of the World War I that the US began to be considered as a world super economic power. The reason after that is that by staying neutral the US supplyed and selled weapons and war equipment to both parties of the conflict, getting profit out of it.
Answer:
<em>D. House Un-American Activities Committee.</em>
Explanation:
Because the Cold War escalated, it became recognized as the Red Scare, the hysteria over the supposed danger posed by communists in the USA.
The Government of the United States responded by establishing the House Un-American Activities Committee (HUAC), tasked with detecting communist dangers to the U.S.
HUAC was founded in 1938 to prosecute suspected treachery and subversive behavior by private individuals, public workers and institutions accused of communist connections.
Americans who are accused of having ties with the Communist Party will be prosecuted in court.
The idea was that with railroad expansion in new territory, settlers would follow, establish communities, and increase the value of land. Railroads could sell their portions of land and profit from their investment. The federal government hoped the railroad profits would be reinvested for further expansion.
