According to this view, the Lusatian Culture which archaeologists have identified between the Oder and the Vistula in the early Iron Age, is said to be Slavonic; all non-Slavonic tribes and peoples recorded in the area at various points in ancient times are dismissed as "migrants" and "visitors".
In contrast, the critics of this theory, such as Marija Gimbutas, regard it as an unproved hypothesis and for them the date and origin of the westward migration of the Slavs is largely uncharted; the Slavonic connections of the Lusatian Culture are entirely imaginary; and the presence of an ethnically mixed and constantly changing collection of peoples on the Middle European Plain is taken for granted.
In the United States, a significant number of Polish immigrants settled in Chicago, Ohio, Detroit, New Jersey, New York City, Orlando, Pittsburgh, Buffalo, and New England.
The highest concentration of Polish Americans in a single New England municipality is in New Britain, Connecticut.
There is a notable Polish diaspora in the United States, Brazil, and Canada.
France has a historic relationship with Poland and has a relatively large Polish-descendant population. In the early 20th century, over a million Polish people settled in France, mostly during world wars, among them Polish émigrés fleeing either Nazi occupation or later Soviet rule.
Over time, Polish culture has been greatly influenced by its ties with the Germanic, Hungarian, and Latinate world and other ethnic groups and minorities living in Poland.The city of Curitiba has the second largest Polish diaspora in the world (after Chicago) and Polish music, dishes and culture are quite common in the region.A recent large migration of Poles took place following Poland's accession to the European Union and opening of the EU's labor market; with an approximate number of 2 million, primarily young, Poles taking up jobs abroad.The Polish community in Norway has increased substantially and has grown to a total number of 120,000, making Poles the largest immigrant group in Norway.Poland, located in Central Europe, developed a character that was influenced by its geography at the confluence of fellow Central European cultures (Austrian, Czech, German, Hungarian, and Slovak) as well as from Western European cultures (French, Spanish and Dutch), Southern European cultures (Italian and Greek), Baltic/Northeastern cultures (Lithuanian, Estonian and Latvian), Eastern European cultures (Belarusian and Ukrainian) and Western Asian/Caucasian cultures (Ottoman Turkish, Armenian, and Georgian).