On May 29, 1453, after an Ottoman army stormed Constantinople, Mehmed triumphantly entered the Hagia Sophia<span>, which would become the city's </span>leading <span>mosque. Emperor Constantine XI died in battle that day, and the decline and fall of the Byzantine Empire was complete.</span>
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The indus valley developed a little more useful technology and tools while Mesopotamian and egyptians were behind on new tools and technology
