"There were 2 main reasons:
<span>The Second Industrial Revolution created the need for a workforce in new factories,so many people moved from the countryside to the cities to find jobs in these factories.The effects of the depression of 1873-1896,which spread to America,further encouraged people to go to the cities to find work. </span>
<span>There was a long economic depression in Europe from 1873-1896,which encouraged many Europeans to emigrate to America.Most of these arrived at major port cities,and found jobs in factories so stayed there.</span>
In 1493, Pope Alexander VI settled the conflict between Spain and Portugal over the newly discovered lands outside Europe in the Treaty of Tordesillas. It was the Pope who had to settle the argument because Spain didn't have enough military power in the Atlantic to fight the Portuguese, so they preferred a diplomatic settlement. The Pope divided the lands along an imaginary line 370 leagues west of the Cape Verde islands; the lands of the East were to belong to Portugal, and the lands of the West were for Spain.
France had a strong army.
Americans would be stopped in their expansion of manifest destiny.
Probably the islands of the Caribbean
