World of Monarchies

In our timeline, monarchs mostly lost their power during the 20th century. But what if monarchs continued to rule the world until the present day? In this althist, I will tell you about one possibility.

Background and POD
In our timeline the United States of America has always been a democracy, rather than a monarchy. But in this scenario, George Washington loses his republican ideals after becoming president, so he crowns himself as king George I of America and abolshes the parlament. Other founding fathers are split between those loyal to the king and those who oppose him, and a civil war occurs, ending in monarchist victory and a new constitution. The French revolution is crushed, because the new United Kingdom of America supports king Louis XVI against the revolutionaries, and Napoleon never rises to power. After WW1 in Europe, many monarchs lose their power, but in this scenario they manage to maintain their power. Also many countries that gained their independence after WW1 become monarchies instead of democracies.