Poland, officially the Kingdom of Poland, is a country in Central Europe, covering a part of the Northern European Plain. The country is bordered by France to the west, Russia to the east and Hungary to the south. It has a coastline at the Baltic Sea, sharing the waters with Russia and the Scandinavian Union. Having 50 million people, it is one of the most populous countries in Europe. The government system is traditionally a unitary state made up of 16 voivodeships. Poland is a member of the Paris Pact, the International League, the European Union, the World Trade Organization, and the G-organizations.