# GHA volumes I to VIII  
UNESCO's GHA includes the following eight volumes:
Volume I - Methodology and African Prehistory, edited by J. Ki-Zerbo (1981), has 28 chapters and three themes: methodology; archaeology and its techniques; and environmental change and regional sequences.  
Volume II - Ancient Civilizations of Africa, edited by G. Mokhtar (1981), has 29 chapters and four themes. It deals with the evolution and emergence of the continent's early States up to 500 CE, with Egypt and Nubia having the lion's share.  
Volume III - Africa from the Seventh to the Eleventh Century, edited by M. Elfasi and I. Hrbek (1988), comprises 28 chapters and five themes. It focuses on the expansion of Islam and its consequences on peoples and cultures of the African continent.  
Volume IV - Africa from the Twelfth to the Sixteenth Century, edited by D. T. Niane (1984), partly overlaps chronologically with the previous volume. It comprises 27 chapters and four themes, dealing with the diversity of Africa's political, social and economic organizations as well as the 'Africanization' of Islam.  
Volume V - Africa from the Sixteenth to the Eighteenth Century, edited by B. A. Ogot (1992), focuses on Ottoman expansion in North Africa, the development of the Atlantic slave trade, and their consequences on African societies. It has 29 chapters organized into thematic subsets: global processes on the one hand, and regional and local syntheses on the other hand.  
Volume VI - Africa in the Nineteenth Century until the 1880s, edited by J. F. Ade Ajayi (1989), consists of 29 chapters and four themes, dealing with European settlements in northern and southern Africa, the formation of new States, Islam revivalist movements in West Africa, and the general state of the continent on the eve of European colonization.