The events that ultimately caused Congress to call a meeting to discuss the Articles of Confederation were primarily Shays' Rebellion and arguments over state borders.
Shays' Rebellion, which took place from 1786 to 1787, was a significant uprising by debt-ridden farmers in Massachusetts seeking to protest taxation and economic injustices. This rebellion highlighted the weaknesses of the Articles of Confederation, particularly the federal government's inability to maintain order and respond to civil unrest.
Additionally, disputes over state borders and the lack of a strong federal authority to resolve such issues contributed to the call for a meeting to address the shortcomings of the Articles. These challenges underscored the need for a stronger centralized government, leading to the Constitutional Convention in 1787.