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Quick Facts Antoine-Thomson d’ Abbadie and Arnaud-Michel d’ Abbadie were two brothers who, as geographers and travelers, conducted extensive investigations of the geography, geology, archaeology, and natural history of Ethiopia. Their parents, a French father and an Irish mother, moved to France in 1818. In 1835 the French Academy sent Antoine on a scientific mission to Brazil. Arnaud spent some time in Algeria before the two brothers started for Ethiopia in 1837, landing at Mitsiwa...