How did u.s. leaders respond to the threat of soviet expansion in europe

1. world war ll conviced u.s leaders that the policies of isolationism & appeasement had been mistakes 

The answer is Shay's Rebellion.

The crisis of the 1780s was most intense in the rural and relatively newly settled areas of central and western Massachusetts. Many farmers in this area suffered from high debt as they tried to start new farms. Unlike many other state legislatures in the 1780s, the Massachusetts government didn't respond to the economic crisis by passing pro-debtor laws (like forgiving debt and printing more paper money). As a result local sheriffs seized many farms and some farmers who couldn't pay their debts were put in prison. These conditions led to this first major armed rebellion in the post-Revolutionary United States.