The transcontinental railroad transformed the west because it made the idea of manifest destiny so much easier to achieve. The railroads also gave access to many trade spots, which in result connected them all, making the economy of America BOOM.
Because they were so close to these rivers, they serve as sources of drinking water. What gave opportunity for people to settle and become sedentary, focusing initially on agriculture and land security, with this the population grew and avoided the risks of nomadic communities, not having to go to places unknown or dangerous or run out of food. Therefore, over time they then focused on more complex areas such as politics, economy and architecture. Promoting the development of the community that over the years were the foundations of modern civilization.
It doubled in size or to be exact 828,000 square miles.
Answer:
It don't matter. God loves you
Explanation: