As a South Carolina senator, Calhoun used the argument of states' rights to protect slavery in what is known as the Nullification Crisis of 1832-1833. At the end of his senatorial career, Calhoun opposed the Compromise of 1850 because of its proposed limits on slavery during the westward expansion of the nation.
Infringement on the people's rights.
The Aztec and Incan people had never come in contact with the bacteria and germs the Spanish brought with them to The New World and so their immune systems did not have any specialized defense against them, this meant that the bacteria and germs the Spanish carried with them, while not being enough to affect the Spaniards, were practically overexposure for the Aztec and Incan people.
What is the module? You should be more specific in your questions.
Racism was very common back in the day. Black people were considered “inferior” to white people because of their skin. Influences came from a long time after slavery went on.