I think the answer is (b)
The significance of the 54th Massachusetts regiment was that it was the first African-American regiment to play a major role in a military campaign.
<h3>What is the
54th Massachusetts regiment?</h3>
During the American Civil War, this infantry regiment saw an extensive service in the Union Army which included the African-American.
Therefore, the infantry regiment was significant because it was an all black regiment of troops during the Civil War.
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The correct answer is : One of the results was that the United States developed the hydrogen bomb.
Explanation: The hydrogen bomb, among the military is called thermonuclear bomb or fusion bomb. It was created by the physicist Edward Teller and revised and improved by Stanislaw Ulam. They launched a combination between a plutonium fission bomb with a large amount of fusion fuel. It was launched for the first time on an otolón in the Pacific in 1952.
