What was one negative result of the columbian exchange?

The viceroy of spain asked that coronado's expadition be cristian and apostolic and not a buchery,what does that mean and did cornado follow his orders

How did the northern u.s. change during the 19th century? select the best choice from the answers provided. a. it became more industrial. b. it became more agrarian. c. it became less populated. d. it became less diverse

Which event occurred in 1943 and to make the allied victory possible choose all answers that are correct