Answer
Preußenschlag refers to the coup executed by Franz von Papen in Prussia on July 20, 1932, targeting the Social Democratic Party (SPD) state government. Papen, backed by President Paul von Hindenburg, dismissed the elected SPD-led Prussian government without legal grounds, citing alleged failure to maintain public order. This authoritarian move consolidated power in the hands of the conservative elites and ultimately paved the way for Adolf Hitler's rise to power.