Instead, Libya pursued closer bilateral ties, particularly with Egypt and Northwest African nations Tunisia and Morocco. It also has sought to develop its relations with Sub-Saharan Africa, leading to Libyan involvement in several internal African disputes in the Democratic Republic of Congo, Sudan, Somalia, Central African Republic, Eritrea, and Ethiopia. Libya also has sought to expand its influence in Africa through financial assistance, ranging from aid donations to impoverished neighbors such as Niger to oil subsidies to Zimbabwe. Gaddafi has proposed a borderless "United States of Africa" to transform the continent into a single nation-state ruled by a single government. This plan has been moderately well received, although more powerful would-be participants such as Nigeria and South Africa are skeptical.