What best characterizes the nonaggresion pact of august 23 1939?

The nonaggression pact of August 23, 1939, also known as the Molotov-Ribbentrop Pact, was a treaty between Nazi Germany and the Soviet Union that pledged neither country would attack the other. It included secret protocols dividing Eastern Europe into spheres of influence, setting the stage for both nations to invade Poland shortly thereafter. This agreement shocked the world, as it united two ideologically opposed regimes and facilitated the outbreak of World War II. The pact ultimately collapsed in 1941 when Germany invaded the Soviet Union.