What were the consequences of US imperialism in places like the Philippines and China?

You could argue that one of the consequences of US
imperialism in these areas was World War II.

When the US
took the Philippines and made inroads into China, it placed itself in an area that was
already of great interest to Japan.  Japan felt that it, too, should be an imperial
power and it felt that its Asian "neighborhood" was the perfect place to take such an
empire.  If the US had not had interests in China and possession of the Philippines,
Japanese expansion would not have been such a big deal.  However, Japanese expansion was
sure to run up against US interests because of the US's imperial
possessions.

Because the US had imperial possessions in an
area that Japan coveted, Japan felt the need to attack the US at Pearl Harbor to prevent
the US from resisting Japanese expansion.  Seen in this light, US involvement in WWII
was a consequence of US imperialism in this area.