Final answer:
Washington responded to the crisis by first seeking peace, then using military force when necessary, leading to the arrest and trial of culprits, whom he later pardoned, ending the crisis.
Step-by-step explanation:
George Washington's response to the crisis, involving the threat of a militia attack due to direct taxes, was to defend the union firmly. Initially, he attempted a peaceful resolution by sending a peace commission, but after it failed, he raised a militia force of 12,000 from various states to quash the insurrection. Washington led the troops to Pittsburgh, and by the time of their arrival, the resistance movement had nearly dissipated. The government apprehended and tried several men, with the president eventually pardoning those convicted of treason, thus resolving the crisis.