Here are the responses to your questions:
Question 13: He claimed that states had the right to cancel any federal law deemed unconstitutional.
Question 14: He objected to tax money being used to pay for the U.S.-Mexican War.
Question 15: There were more economic opportunities in the West due to the success of the canal system.
Question 16: By purchasing the land from France
Question 17: The mass migration of forty-niners transformed San Francisco into an economic hub practically overnight.
Question 18: allowing more efficient movement of goods
Question 19: Disease spread quickly because the travelers lived so close together.
Question 20: It shows the long distances they were forced to walk to reach their designated lands.
Question 21:
- If the United States annexed Texas, it would almost certainly mean war with Mexico.
- If the United States annexed Texas, it would enter as a free state and anger Southerners.
Question 22: The Oregon Trail grew from small beginnings to a major migration route.