Evidence for the presence of Jewish communities in the geographical area today covered by Austria can be traced back to the 12th century. In 1848 Jews were granted civil rights and the right to establish an autonomous religious community, but full citizenship rights were given only in 1867. In an atmosphere of economic, religious and social freedom, the Jewish population grew from 6,000 in 1860 to almost 185,000 in 1938. In March 1938, Austria was annexed by Nazi Germany and thousands of Austrians and Austrian Jews who opposed Nazi rule were sent to concentration camps. Of the 65,000 Viennese Jews deported to concentration camps, only about 2,000 survived, while around 800 survived World War II in hiding.