Final answer:
Shays' Rebellion, an uprising led by Daniel Shays and Massachusetts farmers in 1786-1787, happened on the same day as the building of the "one-hoss shay". It highlighted the weaknesses of the Articles of Confederation and contributed to the formation of the U.S. Constitution.
Step-by-step explanation:
The event that happened on the same day the deacon built his "one-hoss shay" is related to an important occurrence in American history known as Shays' Rebellion. This uprising was led by Continental Army veteran Daniel Shays and his associate Job Shattuck along with other heavily indebted Massachusetts farmers in 1786-1787. Their rebellion was significant in that it prompted calls for a stronger national government as the limitations of the Articles of Confederation were highlighted when the federal government could not respond effectively to the crisis.
Shays' Rebellion involved protestors marching to local courthouses, demanding relief from debts and taxes, and even attempting to raid the Springfield Armory. The rebellion culminated in a response from privately funded militia rather than government troops. This period of civil unrest had lasting implications, influencing the drafting of the United States Constitution.