The Army of fascist Germany marches into Austria, and absorbs that nation into “Greater Germany.”  The day before the illegal National Socialist (“Nazi”) Party of Austria overthrew the one-party dictatorship of Kurt von Schuschnigg.  Schuschnigg had agreed to hold a national plebiscite on the question of merging Austria into Germany, but the referendum was cancelled with the coup d’etat.

       [restored 7/18/2022] Thanks to Bill Holmes for this entry.

Subsequent Events:

3/18/1938                   9/30/1938                   12/25/1979                    3/19/2003

References:

Anschluss – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Anschluss

Current U.s. National Debt:

$36,167,124,467,492

Source