I have moved this question to ask_politics link is here
I'm not sure if this question is for this sub or Ask_Politics, but I'd like to learn more about this topic. I know that America sort of became the Hegemony in the early 1900s (WWI/WWII), so I assume that counts as history.
Other questions:
Is the Hegemonic Stability Theory even valid/effective? If yes, is there any evidence that it has made international relations better?
Is the USA still considered the Hegemony when considering the disaster of Vietnam War and afterwards?
I love reading about history and politics, so sources are much appreciated.
Again, if this is the wrong sub, please tell me so I can ask elsewhere.
I'd definitely put this in /r/Ask_Politics or /r/Asksocialscience
Hegemonic Stability Theory is a little bit more distinctly political (if you want to evaluate the theory), and the application of it is also more political. While history is used as supporting examples, it's not the focus, so I don't think you'll get the answers you're looking for here.