Sudden changes in society are often described as revolutions. advances in technology can result in revolutions in science and the workforce. dissatisfaction with a government can lead to a political revolution. under what circumstances is it likely that these changes will occur? are there circumstances in which these changes should not occur?

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

Which two important economic activities in the west are possible because of the united states natural resources

By the end of the 1800s, there was a change in the nature of the immigrants coming to the united states. immigration from northern europe—england, ireland, germany, and scandinavia—declined, while immigration from italy, russia, and austria-hungary grew. in fact, between 1900 and 1910, more than three-fourths of all immigrants came from these three countries. unfortunately, these countries were far removed england, the home of our founders, and the immigrants who came from them had a hard time adjusting to life in their new country.