 Complete the following phrase:  After a short period of unity 19181920 people not recognizing themselves as a nation divided up into three armed enemy camps: the working class lead by the social democrats;the conservative Catholics led by the governing Christian Social Party and the Catholic Church; and thirdly supporters of unification with Germany. In 1933 the head of the conservatives Engelbert Dollfuss dissolved parliament, drove social democrats out of power-holding structures, banned communists and Nazis and installed a one-party authoritarian rule of a right-wing trend. In February 1934 the conflict developed into a civil war that resulted in the defeat of the left-wing forces. In July National Socialist sympathisers rebelled, killed Dollfuss, but failed to seize power. 