Making them slaves to work on their plantations which eventually killed a lot of them.
There was a strong spirit of cooperation
This is because both Puerto Rico and the Virgin Islands were unincorporated territories of the United States with the U.S president as head of State. There was no need to patrol Puerto Rico and the Virgin Islands as the U.S blockade was against Cuba, not against the two U.S territories.
the combination in one company of two or more stages of production normally operated by separate companies.