Here are the responses to your questions based on historical context:
Question 11: How did westward expansion affect slavery in the United States between 1820 and 1850?
- Response: The slave population roughly doubled as several new slave states were admitted to the Union.
Question 12: Why was the Mexican Cession a significant event?
- Response: It intensified the debate over the expansion of slavery.
Question 13: How did John Calhoun react to the Tariff of 1828?
- Response: He claimed that states had the right to cancel any federal law deemed unconstitutional.
Question 14: How did Thoreau justify this act of civil disobedience?
- Response: He objected to tax money being used to pay for the U.S.-Mexican War.
Question 15: How did the economic success of the Erie Canal impact westward expansion?
- Response: There were more economic opportunities in the West due to the success of the canal system.
Feel free to ask if you have more questions or need further assistance!