* (partially - 475 km in the EU, 116 km of them as border of the EU) Ume - ** Mur - (tributary of Drava, Danube) Ångerman - * Klarälven - (major tributary of the Göta älv) Lule - * (a very small part near the source is in Norway) Gauja - Weser - Kalix - * Vindel River - (major tributary of the Ume River) Ljusnan - Indalsälven - * Vltava - (major tributary of the Elbe) Ialomița - Struma - ** Someș - (tributary of Tisza, Danube) Adige - Skellefte - Tiber - * Vah - (tributary of the Danube) Pite - * Faxälven - (major tributary of the Ångerman) Vardar - Charente - * Iskar - (longest river entirely in Bulgaria) (tributary of the Danube) Shannon - Daugava - * (partially - 357 km in the EU) Minho - * Tundzha - (partially - 328 km) (major tributary of Maritsa) Segura - Human geography Demographics The most populous member state is Germany, with an estimated 82.1 million people, and the least populous member state is Malta with 0.5 million. Birth rates in the EU are low with the average woman having 1.6 children. The highest crude birth rates is in the Republic of Ireland with 16.876 births per thousand people per year and in France with 13.013 births per thousand people per year. Germany has the lowest birth rate in Europe with 8.221 births per thousand people per year. Largest cities The European Union is home to more global cities than any other region in the world. Over 16 cities with populations over one million inhabitants, counted in its city proper. Densely populated regions that have no single core but have emerged from the connection of several cities and are now encompassing large metropolitan areas are Rhine-Ruhr having approximately 11.5 million inhabitants (Cologne, Düsseldorf, et al.), Randstad approx. 7 million (Amsterdam, Rotterdam, The Hague et al.), the Flemish Diamond approx. 5.5 million, Frankfurt/Rhine-Main approx. 4 million (Frankfurt, Wiesbaden et al.) and the Upper Silesian Industry Area approx. 3.5 million. (Katowice, Sosnowiec et al.). Environment In 1957, when the EU was founded, it had no environmental policy or laws. Today, the EU has some of the most progressive environmental policies of any state in the world. The environmental policy of the EU has therefore developed in remarkable fashion in the past four decades. An increasingly dense network of