The Pepper Coast has been inhabited at least as far back as the 12th century, perhaps earlier. Mende-speaking people expanded westward from Sudan, forcing many smaller ethnic groups southward towards the Atlantic ocean. The Dei, Bassa, Kru, Gola and Kissi were some of the earliest recorded arrivals. This influx was compounded by the decline of the Western Sudanic Mali Empire in 1375 and later in 1591 with the Songhai Empire. Additionally, inland regions underwent desertification, and inhabitants were pressured to move to the wetter coast. These new inhabitants brought skills such as cotton spinning, cloth weaving, iron smelting, rice and sorghum cultivation, and social and political institutions from the Mali and Songhai Empires. Shortly after the Manes conquered the region, the Vai people of the former Mali Empire immigrated into the Grand Cape Mount region. The ethnic Kru opposed the influx of Vai, forming an alliance with the Manes to stop further influx of Vai.
People along the coast built canoes and traded with other West Africans from Cap-Vert to the Gold Coast. Between 1461 and late 17th century, Portuguese, Dutch and British traders had contacts and trading posts in the region. The Portuguese named the area Costa da Pimenta, meaning Pepper Coast but later translated as Grain Coast, because of the abundance of grains of melegueta pepper. European traders would barter various commodities and goods with local people. When the Kru began trading with Europeans, they initially traded in commodities, but later they actively participated in the African slave trade.
In 1820, the American Colonization Society (ACS) began sending black volunteers to the Pepper Coast to establish a colony for freed American blacks. These free African Americans came to identify themselves as Americo-Liberian, developing a cultural tradition infused with American notions of racial supremacy, and political republicanism. The ACS, a private organization supported
