Hi there!
The answer you are looking for is an autocrat. This would have made him an Autocrat.
<em>If George Washington had become "King of America," our government might have become an autocracy. </em>
Even though there was some consideration to make George Washington the king of America, he couldn’t have been able to be a king due to how Monarchy itself works and functions.
Hope this helps!
I think the most populated place in Europe is Russia.
The current de facto capital of Japan is Tokyo, with the seat of the Emperor, National Diet and many government organizations.