Fast a title that muslims use for the highest leader of islam

The answer is "Caliph"

Explanation: A person considered a political-religious successor to the Islamic prophet Muhammad and a leader of the entire ummah (Muslim community).referring to humans as God’s stewards or vice-regents on earth, the term did not denote a distinct political or religious institution during the lifetime of the Prophet Muhammad. It began to acquire its later meaning and to take shape as an institution after Muhammad’s death.

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

in an absolute  monarchy, the  monarchrules as an autocrat, with absolutepower  over the state and government — for example, the right to rule by decree, promulgate laws, and impose punishments. the  monarch isnominally sovereign but the electorate, through their legislature, exercise political sovereignty.