Explanation: If you're talking about Christopher Columbus, he introduced horses, sugar plants, and disease to the New World.. ♥️hope this helps♥️
Answer:
{(3,8),(1,4),(-1,0),(-3,-4)}
Because frontier settlers had many disasters encountered.
They are detached so many times, they are attacked, their horses got stolen,
suffered a shortage of food and they are finding for golds that invaded by the
Land of Native Americans. Settlers are interested too because Native Americans
have the capacities for civilization.
Answer: Russia's massive defeats in WWI, food and fuel shortages and low confidence in the government.