The districts through which the river flows include the Parrot's Beak area of Guinea, Liberia's Lofa County and the Kono and Kailahun District of Sierra Leone. Diamond 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, Second Liberian Civil War).