What is something that the columbian exchange brought to native americans? domestic animals they had never seen new techniques for building homes very seaworthy ships better health

Domesticated animals: The Americas had not seen horses, pigs, or cattle prior to the arrival of the Europeans. 

These animals changed how Native Americans lived, ate, and fought. They were able to use horses to travel more quickly, fight their enemies, and eventually in agriculture. The animals also brought disease which harmed the Native Americans.

Both countries had to aprove annexation.