"There are roughly 15 to 20 million people of Polish ancestry living outside Poland, making the Polish diaspora one of the largest in the world.[1] Reasons for this displacement vary from border shifts, to forced resettlement, to political or economic emigration. Major populations of Polish ancestry can be found in Germany, Ukraine, Belarus, Lithuania, France, United Kingdom, Sweden, Ireland and many other European countries, the United States, Canada, Brazil and elsewhere in the Americas. Many Poles can also be found in most Asian, African and Australasian countries."Здесь о том, почему воют голландцы.  Polish immigration to the Netherlands has steadily increased since Poland was admitted to the E.U., and now an estimated 135,000 Polish people live in the country. The majority of them are guest workers through the European Union contract labor program, as more Poles obtain employment in this country's light industrial jobs. The growing number of Polish nationals could double in the next decade depending on economic conditions in Poland. The majority of Polish people in the Netherlands are in The Hague (approximately 30.000) but Polish emigres long settled in Amsterdam and industrial towns or cities like Utrecht and Groningen. Polish immigrants arrived to find employment in the country in the 19th and 20th centuries." Отсюда http://en.wikipedia.org/wiki/Polish_diaspora