Poland's geography and landforms, including information on the Baltic Sea, Sudetic The Oder, Vistula and Warta are the country's major rivers. The Bledow Desert, located in southern Poland, is only one of five natural deserts in Europe. Free political, physical and outline maps of Europe and individual country maps years later the Kingdoms of Poland and Hungary would also take shape. For the next five centuries, under Ottoman rule, Bulgaria became an oppressed nation isolated from the rest of Europe. The country struggled. Hungary is a mostly flat country, dominated by the Great Hungarian Plain east of the Danube. The plain includes It's central Europe's largest freshwater lake. He strengthened the country's fortifications and its economy. the Krakow Academy, the second university to be founded in central Europe. Most Dangerous Cities in the World · The 10 Smallest Countries In The World Countries of Europe. Albania |; Andorra |; Armenia |; Austria.