Shays's Rebellion was provoked by

  1. fear that the Articles of Confederation had created too strong a national government for the United States.

  2. efforts by wealthy merchants to replace the Articles of Confederation with a new constitution.

  3. a quarrel over the boundary between Massachusetts and Vermont.

  4. foreclosures on the mortgages of backcountry farmers.

  5. the government's failure to pay bonuses to Revolutionary War veterans.