What agreements were signed with Germany in World War II?

In 1939 (before the war, August 19), a Soviet-German trade agreement was signed, which was the first step to improve relations between Germany and the USSR. This agreement later led to the conclusion of the Molotov-Ribbentrop Pact, which implied the non-aggression of Germany against the USSR during the Second World War. At the same time, this treaty contained articles on the division of spheres of influence if hostilities nevertheless begin. On June 22, 1941, Germany violated the concluded pact and attacked the USSR. The Red Army was not ready for such a quick start of the war, which brought many defeats in the first months.