Complex sentence: First, the Judenrat was established, ordered to issue an announcement about the relocation which didn't work; therefore, the Germans themselves evicted the Jews from their homes, and transferred them to the ghetto by force.
Split into simpler sentences: First, the Judenrat was established and ordered to issue an announcement about the relocation, but this had no effect. Consequently, the Germans themselves evicted the Jews from their homes, transferring them to the ghetto by force.