In 1786, a group of western Massachusetts farmers rose up to protest taxes and actions against debtors. This uprising, known as Shay’s Rebellion was important because it -

revealed the inability of the national government to put down a farmers' uprising

Explanation:

During the shay rebellion, a group of common citizens managed to defeat the military defense in Massachusetts and took control over their armory. The government officials at that time believed that this happened because of the weakness in initial draft of the constitution,.

The event occurred In 1786. at that time the constitution did not provide the national government with the power to freely centralized and mobilize the military's.  As a result, The national government do not have the troops in their disposal to handle the rebellions.

answer; i do believe its (b) 12.5 years of age;

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