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In page Albert II of Germany:

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Though the Jews in the Austrian duchy had been subject to local persecutions during the 13th and 14th century, their position remained relatively safe. Jewish communities prospered in several towns like Krems or the area around the Judenplatz at Vienna. During the confusion after the death of Duke Albert IV in 1404 their situation worsened sharply, culminating in the blaze of the Vienna synagogue on 5 November 1406, followed by riots and lootings.[citation needed]