Madagascar, officially the Republic of Madagascar, is an island country lying off the southeastern coast of Africa. It is the world's fourth largest island, the second-largest island country and the 46th largest country in the world. Its capital and largest city is Antananarivo.
Madagascar consists of an eponymous main island and numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation; consequently, it is a biodiversity hotspot and one of the world's 17 megadiverse countries, with over 90% of wildlife being endemic. The island has a subtropical to tropical maritime climate.
