Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country located in West Africa. It borders Senegal to the north and Guinea to the east and south, with a coastline along the Atlantic Ocean to the west. The country has a diverse geography, including mangrove swamps, forests, and a coastal plain. The capital and largest city is Bissau. The official language is Portuguese, and the country has a diverse cultural heritage, with more than 20 ethnic groups and a mix of traditional animist beliefs and Christianity. The economy is primarily based on agriculture, with cashews being the main export crop. Guinea-Bissau has experienced political instability and has been plagued by corruption and drug trafficking.