"The first recorded war occurred in c. 2700 B.C. It was between Sumer (in modern Iraq) and Elam (a region that is now part of Iran), and was fought in the area around Basra (just like the Iran-Iraq war of the 1980s). Of course, tribes, cities, etc., had been fighting each other for thousands of years before that, but there are no records of these earlier conflicts as writing wasn't invented until a little before 3000 B.C. "

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