The collapse of East Germany (the GDR) in 1989-1990 was driven by a "perfect storm" of economic stagnation, Soviet policy shifts, and mass civil unrest. By the late 1980s, the GDR’s centrally planned economy was failing to provide basic consumer goods, leading to widespread frustration. Simultaneously, Soviet leader Mikhail Gorbachev introduced glasnost (openness) and perestroika (restructuring), signaling that the USSR would no longer use military force to keep Eastern Bloc communist regimes in power—the so-called "Sinatra Doctrine." This emboldened the population to stage massive "Monday Demonstrations" in cities like Leipzig. When Hungary opened its border with Austria, thousands of East Germans fled to the West, creating a refugee crisis that the GDR leadership couldn't contain. Ultimately, a bungled announcement about travel regulations led to the spontaneous opening of the Berlin Wall on November 9, 1989, effectively ending the regime’s control.