The Mano River is a river in

West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...

. It originates in the

Guinea Highlands The Guinea Highlands is a densely forested mountainous plateau extending from central Guinea through northern Sierra Leone and Liberia to western Ivory Coast. The highlands include a number of mountains, ranges and plateaus, including the Fouta Dj ...

Liberia Liberia, officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to Liberia–Sierra Leone border, its northwest, Guinea to Guinea–Liberia border, its north, Ivory Coast to Ivory Coast–Lib ...

and forms part of the Liberia-

Sierra Leone Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...

border Borders are generally defined as geography, geographical boundaries, imposed either by features such as oceans and terrain, or by polity, political entities such as governments, sovereign states, federated states, and other administrative divisio ...

. The districts through which the river flows include the Parrot's Beak area of

Guinea Guinea, officially the Republic of Guinea, is a coastal country in West Africa. It borders the Atlantic Ocean to the west, Guinea-Bissau to the northwest, Senegal to the north, Mali to the northeast, Côte d'Ivoire to the southeast, and Sier ...

, Liberia's Lofa County and the Kono and Kailahun District of Sierra Leone.

Diamond Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of e ...

mining is a major industry in these areas. Control of the area's wealth and the instability of the national governments of all three countries led to a series of violent conflicts involving these districts in the 1990s (See Sierra Leone Civil War,

First Liberian Civil War The First Liberian Civil War was the first of Second Liberian Civil War, two civil wars within the West African nation of Liberia which lasted between 1989 and 1997. President Samuel Doe's regime of totalitarianism and widespread Political cor ...

Second Liberian Civil War The Second Liberian Civil War was a civil war in the West African nation of Liberia that lasted from 1999 to 2003. The war was mainly caused by transition failures after the First Civil War, especially the peace-building process which would res ...

). Liberia and Sierra Leone founded the

Mano River Union The Mano River Union (MRU) is an international association initially established between Liberia and Sierra Leone by the 3 October 1973 Mano River Declaration. It is named for the Mano River which begins in the Guinea highlands and forms a borde ...

in 1973. Guinea joined in 1980. It was reactivated in 2004 as a customs and economic union; Côte d'Ivoire joined in 2008.

References

Rivers of Guinea Rivers of Liberia Rivers of Sierra Leone Liberia–Sierra Leone border International rivers of Africa Border rivers {{SierraLeone-river-stub