Final answer:
The most important outcome of Washington's actions during the Whiskey Rebellion was affirming the authority of the federal government to enforce its laws and maintain order, countering any perceptions of its weakness. (option A)
Step-by-step explanation:
The most important consequence of Washington's actions during the Whiskey Rebellion was likely Washington's actions helped define the authority of the federal government. The Whiskey Rebellion of 1794 was a domestic uprising provoked by an excise tax on distilled spirits, a critical part of Alexander Hamilton's financial program. While some citizens paid the tax without protest, in western Pennsylvania, the tax was vehemently opposed. Washington's administration faced a significant challenge in asserting federal authority over this resistance. The federal government, under Washington's leadership, responded by dispatching a sizeable militia force to quash the rebellion. This decisive action demonstrated the federal government's willingness to enforce its laws and maintain order, reinforcing the power of the national government. It solidified the government's ability to levy taxes and showcased the strength of the executive branch. Consequently, the Whiskey Rebellion did not result in the government's repeal of the whiskey tax, nor did it lead to increased taxes in other parts of the country or weaken the executive power.