Federalism because Amendments are proposed at a federal level and is ratified at a state level. Why have only 27 Amendments been added to the Constitution? Because of Informal Amendments and how easy it is to informally amend it rather than formally.
<span>It showed that the Union's 3-way plan might succeed.</span>
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The Olmec ball game, religious concepts, blood sacrifice, calendar, writing, and astronomy was later used and adapted by other Mesoamerican civilizations. Plus, they laid the foundation for complex agricultural-based society in Mesoamerica.
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