As to emigration, between 1880 and 1918 (World War I) many men left Slovenia to work in mining areas in other nations. The United States in particular has been a common choice for emigration, with the 1910 US Census showing that there were already "183,431 persons in the USA of Slovenian mother tongue". But there may have been many more, because a good number avoided anti-Slavic prejudice and "identified themselves as Austrians." Favorite localities before 1900 were Minnesota, Wisconsin, Michigan, as well as Omaha, Nebraska, Joliet, Illinois, Cleveland, Ohio, and rural areas of Iowa. After 1910, they settled in Utah (Bingham Copper Mine), Colorado (especially Pueblo), and Butte, Montana. These areas attracted first many single men (who often boarded with Slovenian families). After locating work and having sufficient money, the men sent back for their wives and families to join them.