Vinland, which is probably at a site now known as L'Anse aux Meadows, Newfoundland and Labrador, on the eastern coastline of Canada. Modern colonialism In the Colonial Era, colonialism in this context refers mostly to Western European countries' colonization of lands mainly in the Americas, Africa, Asia and Oceania. The main European countries active in this form of colonization included Spain, Portugal, France, the Tsardom of Russia (later Russian Empire), the Kingdom of England (later Great Britain), the Netherlands, and the Kingdom of Prussia (now mostly Germany), and, beginning in the 18th century, the United States. Most of these countries had a period of almost complete power in world trade at some stage in the period from roughly 1500 to 1900. Beginning in the late 19th century, Imperial Japan also engaged in settler colonization, most notably in Hokkaido and Korea. While some European colonization focused on shorter-term exploitation of economic opportunities (Newfoundland, for example, or Siberia) or addressed specific goals such as settlers seeking religious freedom (Massachusetts), at other times long-term social and economic planning was involved for both parties, but more on the colonizing countries themselves, based on elaborate theory-building (note James Oglethorpe's Colony of Georgia in the 1730s and Edward Gibbon Wakefield's New Zealand Company in the 1840s). Colonization may be used as a method of absorbing and assimilating foreign people into the culture of the imperial country. One instrument to this end is linguistic imperialism, or the use of non-indigenous colonial languages to the exclusion of any indigenous languages from administrative (and often, any public) use. Post-colonial variants Soviet Union In the 1920s, the Soviet regime implemented the so-called korenization policy in an attempt to win the trust of non-Russians by promoting their ethnic cultures and establishing for them many of the characteristic institutional forms of the nation-state. The early Soviet regime was hostile to even voluntary assimilation, and tried to de-Russify assimilated non-Russians. Parents and students not interested in the promotion of their national languages were labeled as displaying "abnormal attitudes". The authorities concluded that minorities unaware of their ethnicities had to be subjected to Belarusization, Polonization, etc. By the early 1930s, this extreme multiculturalist policy proved unworkable and the Soviet regime introduced a limited Russification for practical reasons; voluntary assimilation, which was often a popular demand, was allowed. The list of nationalities was reduced from 172 in 1927 to 98 in 1939, by revoking support