The reason the farmers in backcountry Pennsylvania staged a rebellion in 1794 is "due to the tax imposed on Whiskey."
The Whiskey Tax, which the federal government imposed in 1791, was unreasonable and unfair to smaller whiskey producers.
The farmers and distillers staged a rebellion against this Whiskey Tax known as Whiskey Rebellion to voice their displeasure.
The Whiskey Rebellion is generally considered one of the crucial tests of the newly formed US government.
Hence, in this case, it is considered that the tax on Whiskey led to Whiskey Rebellion in 1794.
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