1793, and that Poland would not be economically viable without it. During the First Partition of Poland in 1772, the inhabitants of Danzig fought fiercely for it to remain a part of Poland, but as a result of the Germanisation process in the 19th century, 90% of the people in Danzig were German by 1919, which made the Allied leaders at the Paris peace conference compromise by creating the Free City of Danzig, a city-state in which Poland had certain special rights. Through the city of Danzig was 90% German and 10% Polish, the surrounding countryside around Danzig was overwhelmingly Polish, and the ethnically Polish rural areas included in the Free City of Danzig objected, arguing that they wanted to be part of Poland. Neither the Poles nor the Germans were happy with this compromise and the Danzig issue became a flash-point of German-Polish tension throughout the interwar period. During the 1920s and 1930s there were some successful movements for self-determination in the beginnings of the process of decolonization. In the Statute of Westminster the United Kingdom granted independence to Canada, New Zealand, Newfoundland, the Irish Free State, the Commonwealth of Australia, and the Union of South Africa after the British parliament declared itself as incapable of passing laws over them without their consent. Egypt, Afghanistan, and Iraq also achieved independence from Britain and Lebanon from France. Other efforts were unsuccessful, like the Indian independence movement. And Italy, Japan and Germany all initiated new efforts to bring certain territories under their control, leading to World War II. In particular, the National Socialist Program invoked this right of nations in its first point (out of 25), as it was publicly proclaimed on 24 February 1920 by Adolf Hitler. In Asia, Japan became a rising power and gained more respect from Western powers after its victory in the Russo-Japanese War. Japan joined the Allied Powers in World War I and attacked German colonial possessions in the Far East, adding former German possessions to its own empire. In the 1930s, Japan gained significant influence in Inner Mongolia and Manchuria after it invaded Manchuria. It established Manchukuo, a puppet state in Manchuria and eastern Inner Mongolia. This was essentially the model Japan followed as it invaded other areas in Asia and established the Greater East Asia Co-Prosperity Sphere. Japan went to considerable trouble to argue that Manchukuo was justified by the principle of self-determination,