Party systems are most common in the english-speaking countries of the world.

Two-party systems are most common in the English-speaking countries of the world.

Explanation:

A two-party system is a system of political parties that favors the emergence of two political coalitions (usually antagonistic in the political spectrum) to generate exclusion or positive discrimination of political minorities, and in all elections one of them it reaches the government of the nation and the other occupies the second place in the preferences of vote, happening to be the official opposition to the government. Its defenders argue that it generates political stability by excluding extremist sectors that could achieve parliamentary or presidential representation. On the contrary, its detractors argue that the fact that it excludes these minorities is undemocratic.

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