Emperor Maximilian, of Mexico, issues the “Black Decree,” ordering that any of his subjects taken into custody having rebelled against his rule should face immediate and summary (without due process) execution.

       [added 4/16/2022]

Subsequent Events:

11/29/1864                   2/12/1866                  6/19/1867

References:

French intervention in Mexico – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/French_intervention_in_Mexico

Current U.s. National Debt:

$36,167,124,467,492

Source