Final answer:
Farmers in the United States were discontented between 1860 and 1890 due to overproduction, high tariffs, and economic hardships. The federal government's failure to address their concerns and corruption further exacerbated their discontent.
Step-by-step explanation:
Farmers in the United States were discontented between 1860 and 1890 due to a variety of factors. One major factor was overproduction, which led to a surplus of agricultural products and lower prices. Additionally, high tariffs on goods they needed to purchase and foreign competition further contributed to their economic hardships. Farmers faced mounting debts, exorbitant railroad freight rates, and costly loans, which resulted in financial strain and disillusionment. The federal government's inability to address their concerns and the widespread corruption at both the state and federal levels left farmers feeling neglected and frustrated.