Explanation:

Democracy:
Democracy is a form of government in which power is held by the people, either directly or through elected representatives. It is a system of government where the citizens exercise power by voting. In a democracy, there is freedom of speech, press, and assembly. Citizens have the right to participate in the decision-making process of the government.

Authoritarianism:
Authoritarianism is a form of government where a single leader or a small group of leaders have absolute power and authority. In such a system, the citizens have no say in the decision-making process of the government. The government is not accountable to the people and there is no freedom of speech, press, and assembly.

Dictatorship:
Dictatorship is a form of government where a single person, the dictator, has absolute power and authority. In a dictatorship, the citizens have no say in the decision-making process of the government. The government is not accountable to the people and there is no freedom of speech, press, and assembly.

Countries that practice Democracy:
Many countries around the world claim and practice democracy. Some of these countries include the United States, India, Canada, Australia, Germany, Japan, and the United Kingdom. These countries have free and fair elections, a system of checks and balances, and a constitution that guarantees the rights of the citizens.

Countries that practice Authoritarianism:
There are many countries around the world that practice authoritarianism. Some of these countries include China, North Korea, Cuba, and Vietnam. In these countries, the government controls the media and restricts the freedom of speech, press, and assembly.

Countries that practice Dictatorship:
There are several countries around the world that practice dictatorship. Some of these countries include Syria, Iran, Zimbabwe, and Sudan. In these countries, the government is not accountable to the people and there is no freedom of speech, press, and assembly.