Latvia states of Northern and Eastern Europe were divided into German and Soviet "spheres of influence". In the north, Latvia, Finland and Estonia were assigned to the Soviet sphere. A week later, on 1 September 1939, Germany and on 17 September, the Soviet Union invaded Poland. After the conclusion of the Molotov-Ribbentrop Pact, most of the Baltic Germans left Latvia by agreement between Ulmanis' government and Nazi Germany under the Heim ins Reich programme. In total 50,000 Baltic Germans left by the deadline of December 1939, with 1,600 remaining to conclude business and 13,000 choosing to remain in Latvia. Most of
Poland–Russia border the following Polish administrative districts (powiaty) were granted the same status: The border traffic is very high, and additional border crossings are being considered as of 2013. Poland–Russia border The modern Poland–Russia border is a nearly straight-line division between the Republic of Poland (European Union (EU) member) and the Russian Federation (CIS member) exclave of Kaliningrad Oblast, a region not connected to the Russian mainland. It is currently long. Its current location and size were decided as part of the aftermath of World War II. In 2004 it became part of the boundary of the European Union and Commonwealth of