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| | East Prussia - Britannica Concise |
 | | From 1815 it was known as East Prussia, part of the kingdom of Prussia, and in the 19th century it was a stronghold of Prussian Junkers, a military aristocracy. |
 | | East Prussia - former German province bounded, between World Wars I and II, north by the Baltic Sea, east by Lithuania, and south and west by Poland and the free city of Danzig (now Gdask, Poland). |
 | | Prussia - The Teutonic Order's last grand master in Prussia, Albert of Hohenzollern, became a Lutheran and, in 1525, secularized his fief, which he transformed into a duchy for himself. |
| concise.britannica.com /ebc/article-9363342 (517 words) |
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