Anarchy is a form of government where there is no government. In an anarchy, there is no hierarchy, power, or ability to enforce laws.
Autocracy
Monarchy is a form of government that has a single king or queen as leader. That king or queen has all or most of the power.
Communism
An oligarchy is a form of government that has a few people in power. The people who have the power are usually rich and influential
Representative Democracy
An autocracy is a form of government with a single ruler. This ruler has all the power and does not share it.
Communism is a form of government that controls the entire economy. A communist government controls the entire economy and controls who has access to what and how much of something somebody has.
A representative democracy is a form of government that gives the people almost all the power. In a representative democracy, the people vote for representatives who vote on law and other such things