The National Constituent Assembly, of the Republic of France, passes the Law of the Maximum, establishing maximum, wholesale, transportation and retail prices to be laid on all goods sold in the republic.

       Postscript: This led to shortages, rationing and inevitably a spy system to insure compliance.  Penalties were extremely harsh: the death penalty was imposed on either party seeking to pay at a discount in lawful Money (gold or silver Coin) instead of legal tender (paper Assignats).

       [added 10/23/2021]