Answer:
The Spanish campaign against the Aztec Empire had its final victory on 13 August 1521, when a coalition army of Spanish forces and native Tlaxcalan warriors led by Cortés and Xicotencatl the Younger captured the emperor Cuauhtemoc and Tenochtitlan, the capital of the Aztec Empire.
Explanation:
Barrier islands serve as the first protection for the mainland. They take the first hit and slow down the hurricane/reduce impacts. Because of this, lack of barrier islands would cause the mainland to be flooded even more, which would cause land loss.
The answer is Uncle Tom's Cabin :D
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Main groups = labor activists, female reform organizations who wanted to protect women and children from exploitation, and forward looking businessmen who wanted workers to have a voice in economic decision making
Main ideas = bringing significant change in American social and political life.