How did the aztecs use alliances to build their empire?

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This article I read stated that ¨The Aztecs built alliances, or partnerships, to build their empire. The Aztecs made the people they conquered pay tribute, or give them cotton, gold, or food. The Aztecs controlled a huge trade network. Markets drew buyers and sellers from all over the Aztec Empire.¨

president reagan was a good presidant and should be presidant if he was still alive

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