At the time of the Revolutionary War, nearly every other country on Earth was ruled by a king.
Dr. Pat Robertson wrote in America's Dates with Destiny,1986:
"On September 17, 1787, the day our Constitution was signed, the absolute monarch Ch'ien Lung, emperor of the Manchu (or Ch'ing) Dynasty, reigned supreme over the people of China ... Revolts were put down by ruthless military force.
In Japan the shogun (warriors) of the corrupt Tokugawa chamberlain Tanuma Okitsugu exercised corrupt and totalitarian authority over the Japanese.
In India, Warren Hastings, the British Governor of Bengal, had successfully defeated the influence of the fragmented Mogul dynasties that ruled India since 1600.
Catherine II was the enlightened despot of all the Russians.
Joseph II was the emperor of Austria, Bohemia and Hungary.
For almost half a century, Frederick the Great had ruled Prussia.
Louis XVI sat uneasily on his throne in France just years away from revolution, a bloody experiment in democracy, and the new tyranny of Napoleon Bonaparte.
A kind of a constitutional government had been created in the Netherlands in 1579 by the Protestant Union of Utrecht, but that constitution was really a loose federation of the northern provinces for a defense against Catholic Spain ...
What was happening in America had no real precedent, even as far back as the city-states of Greece.
The only real precedent was established thousands of years before by the tribes of Israel in the covenant with God and with each other."