The number of Danish emigrants is hard to determine. Some scholars suggest over 400,000 before World War 2. Most of those went to the USA, but also Canada, Australia and South America had many Danish immigrants.
Note that around 50,000-60,000 emigrated before World War 1 from Northern Schleswig-Holstein (towns like Haderslev, Aabenraa, Tønder and Sønderborg on the map). A region that was under German rule from 1864-1920 and named Sønderjylland in Danish.
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