Answer:
I think this is mathematics not history...
The Germanic tribes invaded and ultimately destroyed the Western part of the Roman Empire in the 400s. The invasions took place around 406 BC. The fall of the Western Roman Empire did not happen in a day but it took about a 100 years for the empire to fall. I hope the answer helps you.
Answer:
Gold rush and mining opportunities (silver in Nevada)
The opportunity to work in the cattle industry; to be a “cowboy”
Faster travel to the West by railroad; availability of supplies due to the railroad
The opportunity to own land cheaply under the Homestead Act
The discovery of wheat strains adapted to grow in the climate of the Plains.
New inventions allowing them to adapt to life on the Plains, such as the windmill and barbed wire
Adventure and the lure of the “Wild West”
Explanation:
I think that the world would be a better place because the money from the usa would be spread all around the world but many important discoveries won't be made
Im pretty sure one of the main reasons is because of the treaty system