Final answer:
Shays's Rebellion convinced American leaders to call the Grand Convention.
Step-by-step explanation:
The event that convinced American leaders to call the Grand Convention was Shays's Rebellion. Shays's Rebellion was an uprising in Massachusetts in 1786, led by farmer Daniel Shays, against the state government's increasing taxes and aggressive debt collection practices. The rebellion demonstrated the weaknesses of the Articles of Confederation, which lacked a strong central government to respond effectively to internal conflicts.
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