Togo is a tropical, sub-Saharan nation, whose economy depends highly on agriculture, with a climate that provides good growing seasons. While the official language is French, many other languages are spoken, particularly those of the Gbe family. The largest religious group consists of those with indigenous beliefs, and there are significant Christian and Muslim minorities. Togo is a member of the United Nations, African Union, Organisation of Islamic Cooperation, South Atlantic Peace and Cooperation Zone, Francophonie, and Economic Community of West African States.