Which of the following is considered to be one of the effects of the Columbian Exchange? O A. Europeans died from native diseases.
B. Natives became rich from trade.
C. Triangle trade became less profitable.
D. Horses were introduced to the Americas.

-18 metres sorry if im wrong

arresting and exicuting citizens

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.