What is an absolute monarch? Which countries use the practice?

Answer: Absolute monarchy is a form of monarchy in which the monarch holds supreme autocratic authority, principally not being restricted by written laws, legislature, or customs. These are often hereditary monarchies.

Explanation:

There are 43 or 44 countries that have monarchs as the ceremonial or the real head of the state, depending on whether or not the Vatican is counted among them. Of these, 7 (including the Vatican) are absolute monarchies, 16 are Commonwealth realms and the remaining 21 are constitutional monarchies.