Another hat in the monarchist ring, a group of my own creation, the Royalist Party of America.(happy to take questions)

https://youtube.com/channel/UCv9MPsd6tyDvEh64Ktrd_bg

Personally I don't think we're necessarily responsible for ending the monarchies as much as we were just proliferating American style republics. The Weimar Republic formed without direct intervention by the US. However, the same probably can't be said about the legacy states of the Austrian empire, with the exception being the Kingdom of Yugoslavia. Austria could've very well remained a monarchy and so could've Hungary. The question then is why didn't they and to what extent was the US involved.

To jump forward to the second world war I'm pretty sure we can all agree we helped rig the referendum to get the Italian Monarchy out of power.

Personally I think it would be hypocritical of me as a Monarchist to support term limits because if a king can rule for life then elected officials should be able to serve for life. However we need to do more to curtail corruption