Nicaragua , officially the repubic of Nicaragua, is the largest country in the Central American isthmus, bordered by Honduras to the north and Costa Rica to the south. The Pacific Ocean lies to the west, and the Caribbean Sea to the east. The country's physical geography divides it into three major zones: Pacific lowlands; wet, cooler central highlands; and the Caribbean lowlands. On the Pacific side of the country are the two largest fresh water lakes in Central America—Lake Managua and Lake Nicaragua. Surrounding these lakes and extending to their northwest along the rift valley of the Gulf of Fonseca are fertile lowland plains, with soil highly enriched by ash from nearby volcanoes of the central highlands. Nicaragua's abundance of biologically significant and unique ecosystems contribute to Mesoamerica's designation as a biodiversity hotspot. Nicaragua is one of the richest countries in Central America.The Spanish Empire conquered the region in the 16th century. Nicaragua achieved its independence from Spain in 1821. Since its independence, Nicaragua has undergone periods of political unrest, dictatorship, and fiscal crisis—the most notable causes that led to the Nicaraguan Revolution of the 1960s and 1970s. Nicaragua is a representative democratic republic, and has experienced economic growth and political stability in recent years. In 1990, Nicaragua elected Violeta Chamorro as its president, making it the first country in Central American history and the second in the Western Hemisphere to democratically elect a female head of state.
