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The Hyksos, when they effectively defeated the Egyptian Army using chariots.
Hyksos were the first to have chariots
The Egyptians defeated the Hyksos by learning how to make the copper tools that the Hyksos made.
They learned how to fight from the Hyksos. The Hyksos used chariots, and this is how they were able to beat soldiers who were on foot.
Hyksos took over Egypt in 1670 B.C