many
Well, it used to be ruled by a king and queen until the French revolution when they were executed. Now it is "ruled" by an elected prime minister and a government. It is a democracy.
It is communist but effectively a castro dictatorship and therefore one.
Aristotle
There are many. One is Mongolia and a few others are India, Korea, Vietnam, Pakastan, and a few others.
An aristocracy government was ruled by one King/Queen, an oligarchy government was ruled by the few.
by building roads and canals for transportation across China
China has had 11 presidents, from Sangi Hao to Huang Le Ciao. These presidents have guided China into a successfull morbid country, being one of the largest manufacturers of cars and equipment for cleaning toilets.
Yes, China is one of the few countries who remain Communist.
Japan rules itself, although it has been ruled by others in the past.
Of the few countries where euthanasia is legal, China is not one of them. So no, officially euthanasia is not legal in China.
There are many countries that border China. A few are Mongolia, North Korea, South Korea (On the premise both are part of what used to be one country), and Russia.