Siege of Esztergom (1241) other European states, bar Moravia, Bohemia, and the Polish duchies, which the Mongols dealt with separately. Bela's kingdom was ill-prepared for the Mongol invasion. At the time, Hungary was one of the poorest and most sparsely populated areas of Europe. The population was estimated at slightly over 2 million in the mid-thirteenth century despite its large land area, with the largest city, Esztergom, having only 12,000 inhabitants. Its armies consisted primarily of light cavalry with some light infantry, and only a handful of crossbowmen, mounted knights, and heavy infantry, in contrast to the areas further west where such troops were
Geography of Germany number in any single country of the world. The Zoologischer Garten Berlin is the oldest zoo in Germany and presents the most comprehensive collection of species in the world. With an estimated 81.8 million inhabitants in January 2010, Germany is the most populous country in the European Union and ranks as the 15th largest country in the world in terms of population. Its population density stands at . The United Nations Population Fund lists Germany as host to the third-highest number of international migrants worldwide, around 20% of Germany´s population do not hold a German passport or are descendants of