It has helped develop the nation by allowing faster transportation of materials needed to colonize.
Answer: Native Americans who were forced out of Illinois because their homeland was given up in a treaty. Their plan of going back failed; forces of Illinois slaughtered most of them as they tried to flee.
Explanation:
The US had many attempts at compromise with varying levels of sucess before the Civil War. However, when Lincoln was elected president (on the platform of stopping the expansion of slavery), the South lost hope and seceded.
There is always a solution other than war, however, in this case, war had been a looming possibility for quite some time, and compromise probably would've only pushed the war back a year or two.
Hope this helps :)
That the u.s knew its homeland while Britain and other countries didn’t