When did Austria split?
Allied-occupied Austria
The first Americans arrived in Vienna in the end of July 1945,[7] when the Soviets were pressing Renner to surrender Austrian oil fields.[21] Americans objected and blocked the deal[21] but ultimately the Soviets assumed control over Austrian oil in their zone. The British arrived in September. The Allied Council of four military governors[22] convened for its first meeting in Vienna on 12 September 1945. It refused to recognize Renner's claim of a national government but did not prevent him from extending influence into the Western zones. Renner appointed vocal anti-communist Karl Gruber as Foreign Minister and tried to reduce Communist influence. On 20 October 1945, Renner's reformed cabinet was recognized by the Western allies and received a go-ahead for the first legislative election.[23]