What ways did America participate in imperialism?

The way I think that we participated in imperialism is a lot of different
ways but one way is when we went up to the queen of Hawaii and held a gun
up to her head so that we can take over Hawaii. Also we've participated in
many more ways ,but I only thought of that reason. America participated
in more ways and another example is that know Iraq belongs to us.

In my opinion, we're still an imperialism nation but we don't do it
as much. We've improved on stopping but theres much more what we
can do to stop the entire thing. Since the 1900's we've improved a lot.
We still have a lot of power but, have improved. This is what I think.