What is confederation

Confederation, primarily any league or union of people or bodies of people. The term in modern political use is generally confined to a permanent union of sovereign states for certain common purposes—e.g., the German Confederation established by the Congress of Vienna in 1815.

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it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries

i believe it was the shinto