On October 18, 1898, American troops fighting in the Spanish-American War raised the United States flag in Puerto Rico formalizing U.S. control of the former Spanish colony. General Nelson A. Miles had landed approximately 3,500 U.S. troops on the island on July 25. On August 12, Spain and the United States agreed to an armistice; on September 13, the Protocol of Peace was ratified; and on December 10, the Treaty of Paris was signed, ending the Spanish-American War.
Religion can impact voting as if your beliefs do not go with a candidate your more likely to go for the other side. Religious beliefs can also push you to one side.
For the answer to the question above, the demand for manufactured goods fostered the spread of inland trade, as did increasing industrial specialization in the different British regions. Daniel Defoe illustrated this point by describing the multiple provenances of an affluent man's suit of clothes. I hope the answer will help you.
Transmission of communicable diseases
B. The Cold War
The Cold War was pretty much who had the best weapons, technology or advances in technology, science, etc.