Then, in 1938 Germany annexed Austria and the Sudetenland regions of Czechoslovakia. Many refugees then came from those regions as well. On the night of 9 November 1938, there were violent pogroms against Jews across the German Reich, and the imprisonment of thousands of Jews without charges. This led to a further increase in the number of Jews streaming across the border seeking refuge and further emigration. Ultimately, the Committee had become "one of the most powerful organizations in Dutch Jewry in the 1930s."