American Imperialism, Yea or Nay?

Many people have said that the United States is an Imperialistic country. While I believe that we have previously been an imperialistic country, I do not think that we are presently, for three reasons:

1. When the United States decides that another country needs help, we go in and help them to the best of our ability. We do not just say "Oh! That country is so cute and has lots of natural resources, lets go take over their people and do what we want with them!"
2. All of our territories have been territories of ours for a very long time, and we have not made any recent acquisitions (hence the reason why I believe that we were previously imperialistic).
3. When I think of Imperialism, I think of India and the British East India Company, and I do not believe that the United States fits into that category of Imperialism.

Because the definition of Imperialism and what classifies as imperialistic actions is up to the person (aka me) and their personal beliefs, some people may not agree with the points I made above. So, here are the three reasons why I believe we were imperialistic at one point in time:

1. Puerto Rico
2. Guam
3. US Virgin Islands

See? all of those territories were organized and gained by the United States prior to 1920, and none of them were treated like the British treated the Indians or Africans. It may sound hypocritical, because I just said that the US had been imperialistic at one point, but I still do not lump the United States in the same category as any of the European Imperialistic countries because of the rather relaxed and not extreme way in which the United States gained the territories.