The US has been nationalist and imperialist since at least 1823:
https://en.wikipedia.org/wiki/Monroe_Doctrine
Yes, Trump is bad, but US' long history is also bad.
The US is a bully, it has a navy 10 times(!) the size of all the other navys in the world combined. They see themselves as the world police. And un-suprisingly, aren't interested in democracy, but would rather have chaos, and weak dictators in power than strong democracies that will stand up to them.






