A theocracy is a government that bases its laws on the rules of the associated religion. Also, the leaders of a theocracy rule with an assumed religious authority or divine right. In some cases, they are believed to be divine themselves.
A parliamentary democracy, like that of Great Britain, is a system of government in which citizens vote for their representatives in parliament. Once the parliament has been elected, the party with the largest number of representatives chooses a leader, typically called either the chancellor or, as in the case of Great Britain, the prime minister.
Democratic republics, like that of the United States, are representative democracies. People elect representatives to a legislative body, who are then expected to vote based on the needs of their constituencies.
A dictatorship is an authoritarian government in which the citizens do not have a say in the running of their country. In this form of government, the dictator maintains all the power. In dictatorships, either no elections are held or the elections that are held are not fair and are only designed to provide the appearance of popular support. Oftentimes control of the populous is done through the use of force.
A monarchy is a government headed by a single person, usually a king or queen, who is the head of state and the sovereign ruler of the country. Typically, the title is passed down through family ties and the people of the country do not have a voice in choosing their head of state. In some cases, a monarchy is combined with a parliamentary democracy, as in Great Britain, where the monarch is the head of state and the prime minister is the head of government. This is called a constitutional monarchy.
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