As in most of West Africa, Nigeria's climate is characterized by strong latitudinal zones, becoming progressively drier as one moves north from the coast. Rainfall is the key climatic variable, and there is a marked alternation of wet and dry seasons in most areas.
Nigeria has many local festivals that date back to the time before the arrival of the major religions, and which are still occasions for masquerade and dance. The local festivals cover an enormous range of events, fromMada Dancers harvest festivals and betrothal festivals, to the investing of a new chief and funerals.
Nigeria is a federal republic modeled after the United States, with executive power exercised by the president. The government of Nigeria is also influenced by the Westminster System model in the composition and management of the upper and lower houses of a bicameral legislature.