What shifts in population might be attributed to advances in technology and changes in regional economies during America's Industrial Revolution?

Welp the increasing amount of attention america got really sparked people coming from all around the world. At first it was a land of opportunity all these people brought their families and got a slap in the face because it wasnt what it was talked up to be so they had to do something to provide for their family. For many they moved westward to farm and do their on thing out there. Eventually the gold rush came along in california and it was over with, everyone came to america who could afford it.