The first event in World War 2 occurred when Germany invaded Poland. This invasion took place on September 1, 1939, and marked the beginning of the conflict. Germany's aggressive actions towards Poland prompted the Allied forces, including the United Kingdom and France, to declare war on Germany, leading to the widespread conflict known as World War 2.
It's essential to understand that the invasion of Poland was a significant turning point that ignited a series of events leading to the involvement of various countries in the war. Germany's invasion of Poland was a violation of international agreements and sparked a rapid escalation of military actions across Europe.
