It began with the Spanish and Portuguese transatlantic slave trade.
In the period of industrialization, it was easier to harvest crops so supply went up and demand stayed the same causing prices to drop. The "newly" freed slaves also started farming, increasing the supply.
The Second Crusade was started in response to the fall of the County of Edessa in 1144 to the forces of Zengi.
The correct answer is B) The Aztecs had a complex civilization that was destroyed but the Spanish conquerors.The Aztec empire was a flourishing and successful empire that had been ruled by Moctezuma for seventeen years, before it was colonized by the Spanish conquistadors who killed Moctezuma and crumbled the empire by destroying its cities. The Spanish were allied with the Aztecs enemies and treat the enemy empire like nobles, while the Aztecs had statuses of minors.
The answer would be C
The spoils system is when a political party, after winning an election, gives jobs to its supporters.
https://www.britannica.com/topic/spoils-system