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The '''head of government''' is the person who leads the [[government]] of a country. There are two major systems in existence in the world: the [[Prime Minister|prime ministerial]] system, developed in the [[UK]]{{fact}}, and the [[President|presidential]] system, developed in the [[USA]]{{fact}}. Most other countries in the world have adopted one or other of these{{fact}}.

The '''head of government''' is the person who leads the [[government]] of a country. The two major democratic forms of government are Parlimentary, headed by a [[Prime Minister|prime ministerial]], developed in the [[UK]]{{fact}}, and Representative, headed by a [[President|presidential]], developed in the [[USA]]{{fact}}. Most other countries in the world have adopted one or other of these{{fact}}.

In a prime ministerial system, the prime minister is ''always'' a member of the legislature, and is never the [[head of state]]. In a presidential system, the president is ''never'' a member of the legislature, and is always the [[head of state]]. Confusingly, however, many countries with a prime ministerial system often have a head of state who is also called a "president", but without executive power. Other prime ministerial countries have a hereditary [[monarch]] as head of state. Countries with a presidential system cannot be monarchies, however.

In parlimentary governments, the prime minister is ''always'' a member of the legislature, and is never the [[head of state]]. In the representative system, the president is ''never'' a member of the legislature, and is always the [[head of state]]. Many countries with a parlimentary system, however, have a head of state who is also called a "president", but without executive power. Other countries with a parlimentary government have a hereditary [[monarch]] as head of state.

Some countries do not precisely conform to the above definitions. [[France]], for example, is best described as a mixture of the two. [[Dictatorship]]s and [[absolute monarchy|absolute monarchies]] also are not classed as either.

Dictatorships and absolute monarchies are headed by one supreme non-elected leader.

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