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| | Warsaw - Encyclopedia, History, Geography and Biography |
 | | Its population as of 2004 was estimated at 1,692,900, with an urban agglomeration of approximately 2,760,000. |
 | | Following the decisions of the Congress of Vienna of 1815, Warsaw became the center of the Polish Kingdom, a constitutional monarchy under a personal union with the Imperial Russia.Following the repeated violations of the Polish constitution by the Russians, the 1830 November Uprising broke out. |
 | | Public transportation in Warsaw is as efficient as it is ubiquitous, serving the city with trolleybuses, tramways, and a recently opened metro. |
| www.arikah.com /encyclopedia/Warsaw (4873 words) |
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