West Africa Ivory Coast, and a succession of military coups in Ghana and Burkina Faso. Since the end of colonialism, the region has been the stage for some brutal conflicts, including: The Economic Community of West African States, established in May 1975, has defined the region of West Africa since 1999 as including the following 15 states: Geopolitically, the United Nations definition of Western Africa includes the preceding states with the addition of Mauritania (which withdrew from ECOWAS in 1999), comprising an area of approximately 6.1 million square km. The UN region also includes the island of Saint Helena, a British overseas
Geology of Liberia Geology of Liberia The geology of Liberia is largely extremely ancient rock formed between 3.5 billion and 541 million years ago in the Archean and the Neoproterozoic, with some rocks from the past 145 million years near the coast. The country has rich iron resources as well as some diamonds, gold and other minerals in ancient sediment formations weathered to higher concentrations by tropical rainfall. Two billion to 1.6 billion year old Archean and Paleoproterozoic underlie 90% of Liberia, forming the Man Shield, part of the West African Craton—a region of stable continental crust leftover from early continent formation. The