The Sikorski–Mayski Agreement signed in London on 30 July 1941 between Polish government-in-exile and USSR's government invalidated the September 1939 Soviet-German partition of Poland, as the Soviets declared it null and void. Meanwhile, German-occupied Eastern Galicia at the beginning of August 1941 was incorporated into the General Government as "Distrikt Galizien" with Lviv as the district's capital. German policy towards the Polish population in this area was as harsh as in the rest of the General Government. Germans during the occupation of the city committed numerous atrocities including the killing of Polish university professors in 1941. German Nazis viewed the Ukrainian Galicians, former inhabitants of Austrian Crown Land, as to some point more aryanised and civilised than the Ukrainian population living in the territories belonging to the USSR before 1939. As a result, they escaped the full extent of German acts in comparison to Ukrainians who lived to the east, in the German-occupied Soviet Ukraine turned into the "Reichskommissariat Ukraine".