The Kingdom of Spain and the United Kingdom begin withdrawing their armies from Mexico, when they realize that Emperor Napoleon III’s ambitions in Mexico encompass more than collecting on that nation’s foreign debt; Napoleon intends to incorporate Mexico into the Empire of France.

       [added 3/26/2022]

Subsequent Events:

5/5/1862                   5/31/1863                  9/23/1868

References:

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

Current U.s. National Debt:

$36,161,621,015,445

Source