In the British government, the lawmaking body is called Parliament, or the Houses of Parliament. It is made up of the House of Commons and the House of Lords, with the House of Commons directing most of the legislative action.

One of the primary advantages of a two-party system, as compared to a multi-party system, is that if there are only two parties competing for power, they must try to attract as much of the electorate as possible. This generally causes both parties to be extremely moderate in their political leanings. It is not possible to have a coalition government in a two-party system. In a coalition government, which occurs often in parliamentary systems (such as those in the United Kingdom or Germany), no one party gains an absolute majority, so parties combine their votes together to form a coalition and more than one party rules. This has the advantage of allowing disparate and varied political opinions to work together.

One of the primary differences between a presidential democracy (like the governments of the United States and France) and a parliamentary democracy (like the governments of Germany and the United Kingdom) is that in a parliamentary democracy, the people do not directly elect the Prime Minister; instead, they vote for a representative of a political party in the legislature, and the majority party in the legislature chooses a Prime Minister. In modern times, it is generally known before the election of the legislative branch the person each party would choose for their leader, so the difference is nominal in terms of the amount of power held by the people.

Britain is governed by a parliamentary system. There is a legislative body, called the Houses of Parliament, where the leader of the majority party, or of the largest coalition, is Prime Minister. This is different to the American system where votes for the legislature and executive are not directly tied to one another.

"Rule by the few," an oligarchy is defined as a system of government in which a small group of people have complete control over all functions of government.

A totalitarian government, also called an autocracy, is defined by an extremely centralized government in which one person, or one group, wields complete and unchallenged control over the rest of the state. Totalitarian governments are increasingly uncommon around the world, but certainly far from nonexistent.

The Italian state under Mussolini was a prominent examples of Fascism. In a fascist government, liberal democracy is rejected as being too weak, and a system of totalitarian control over the media and the population is instituted. Fascist philosophy believes that the technological advancements of the early twentieth century rendered the distinction between civilian and military combatant obsolete. In a fascist state, the civilian population is mobilized as part of the war effort and is under complete control of the government. Violent nationalism is an important part of fascist ideology.

A system of government ruled by religious leaders and where law is established according to religious codes is called a theocracy.

The United Nations is an international body designed to prevent warfare and represent the collective interests of all the nations of humanity, at least in theory. It was formed after the end of World War Two, in 1945. The League of Nations (the first attempt at such an international organization) was formed in 1918, at the end of World War One, but suffered from a lack of American participation and subsequent ineffectiveness.

Apartheid was a social policy of racial segregation in South Africa from 1948 until the early 1990s. It was enforced by the government, which reduced the economic and political rights of black people in the country.