1 reason can be that big business don't have to keep things in inventory all the time and have their investments locked that way. If you don't need something you don't have to have it.
2 reason is that big business reduces the need for overtime and only work that is needed is done.
Answer:
Sorry. But what are you talking about
The U.S because they stole land from the Native Americans in a violent and cold way and forced them to go down the trail of tears.
Amusing that it's "expansion" two inventions would be the train and steamboat. both provided a source of transportation. Hope that helps.
-Tralynn