What was the significance of the Treaty of Rapallo signed in 1922?

The Treaty of Rapallo, signed in 1922 between the Weimar Republic of Germany and the Soviet Union, held significant implications for both nations, particularly in the context of military and economic cooperation. The treaty effectively reestablished diplomatic relations that had been severed during World War I and allowed both countries to circumvent the restrictions imposed by the Treaty of Versailles. One of the critical aspects of the agreement was that it provided a framework under which Germany could develop military technology and weapons in secret, away from the scrutiny of the Allied powers.

This arrangement enabled Germany to enhance its military capabilities despite the limitations outlined in the Treaty of Versailles. In return, the Soviet Union gained access to German industrial expertise and technology, which it sorely needed during its early years following the Russian Revolution. Hence, the treaty served as a pivotal moment for both nations, signaling a shift in international relations and the beginning of a tactical alliance that would eventually have significant ramifications in the lead-up to World War II.

The other options pertain to different historical contexts and events that do not accurately relate to the Treaty of Rapallo.