1. D. Inca settlements were difficult to find and reach because they were build at high altitudes on rough terrain.
Inca civilizations were well hidden and protected from outside influences due to their location high in the Andes Mountains of South America. It took the Spanish a while to find them, though diseases reached the outlying settlements even when the Spanish did not.
2. D. infectious diseases and drought
The Maya civilization experienced a lengthy and extreme drought that led to widespread starvation, which reduced their population and influence over the region long before Europeans arrived in Mesoamerica. The Inca and the Aztec populations were wiped out by the infectious diseases the Spanish conquistadores brought with them.
The Immigration Act of 1965 begin to change the composition of the American population by more openly allowing immigrants from all parts of Europe, Asia, and Africa to enter the US.
A factor that contributed to the formation of the People's Party in 1891 was that farmers wanted a political party that would represent their interests and wants.
A major reason why the United States supported South Vietnam rather than North Vietnam after the French left was because "<span>D. The United States wanted to prevent communism from spreading," since this was during the Cold War. </span>
Sharecropping became widespread in the South as a response to economic upheaval caused by the end of slavery during and after Reconstruction. Sharecropping was a way for poor farmers, both white and black, to earn a living from land owned by someone else.
