I'm pretty positive it was the king of Prussia
Democracy:
United States: The United States uses a system of Indirect Democracy.
Canada: Canada uses a system of Constitutional Monarchy.
Zimbabwe: Zimbabwe has a Presidential Republic.
Autocracy:
North Korea: North Korea has a Family Regime. However, the current person in power is an autocrat, Kim Jong-un.
I am not so sure what you mean by "what kinds of unions were formed", but if you're talking about the Civil War then I think the unions were Confederate and Union. The Confederates wanted to run the country with slavery while the Union fought against slavery. Do not quote me on that though.
