๐ŸŒพ

Agricultural Economics in 1920s US

Jul 28, 2025

Overview

This lecture focuses on the economic challenges faced by U.S. farmers in the 1920s, especially during Warren G. Hardingโ€™s presidency, and explains agricultural price changes using supply and demand models.

Economic Challenges for Farmers in the 1920s

  • U.S. farmers, especially small ones, suffered economically throughout the 1920s.
  • Technological advances like gasoline-powered tractors increased farm productivity, pushing prices down.
  • During World War I, European demand for U.S. food was high due to destroyed local farms.
  • After World War I, European farm recovery increased global food supply and lowered world food prices.
  • Rising foreign tariffs further reduced prices U.S. farmers could get for exports.

Supply and Demand with International Trade

  • The supply and demand model is used to illustrate agricultural trade impacts (domestic supply and demand curves).
  • Without international trade, equilibrium price and quantity are set by domestic forces.
  • With high world prices during WWI, the U.S. exported the surplus of domestic production over domestic consumption.
  • After WWI, the world price of food fell, causing U.S. production and exports to decrease.
  • Lower world prices led to reduced producer surplus (farmers worse off).
  • U.S. domestic buyers/consumers benefited from lower food prices, increasing consumer surplus.
  • Urban dwellers enjoyed lower food costs and new technology (radios, refrigerators, indoor plumbing).
  • Total exports (X) from the U.S. declined due to price changes.
  • Total surplus (overall economic welfare from trade) in U.S. society also fell.

Key Terms & Definitions

  • Producer Surplus โ€” The benefit producers (farmers) receive from selling at a market price higher than their minimum acceptable price.
  • Consumer Surplus โ€” The benefit consumers receive when they pay less for a good than the maximum they are willing to pay.
  • Total Surplus โ€” The sum of producer and consumer surplus; measures net societal gains from market transactions.
  • Exports (X) โ€” Goods produced domestically and sold abroad.
  • Tariff โ€” A tax on imported (or exported) goods, used here by foreign countries against U.S. food exports.

Action Items / Next Steps

  • Review Appendix 5 on international trade models for a better understanding of supply and demand changes.
  • Practice identifying producer and consumer surplus areas on supply and demand graphs.