Actually Columbus was an evil man he didn't care the natives who was there before he got there and he stole from them.
I'm not too sure what you are asking, however if you are looking for what ended the Spanish War, Island of Puerto, it would be the Treaty of Paris of 1898.
The Spanish War was fought between America and Spain, and took place in Cuba, Puerto Rico, Guam, and the Philippines.
The answer to your question is A
In 1945, a newspaper editor sent out an article commending about Manifest Destiny. (the 19th-century doctrine or belief that the expansion of the US throughout the American continents was both justified and inevitable.) Others for religion reasons, and quite a few for the gold rush