Passage: As early as the 16th century, Dakota tribes, mostly the Mdewakanton, were known as permanent settlers near their sacred site of St. Anthony Falls. New settlers arrived during the 1850s and 1860s in Minneapolis from New England, New York, and Canada, and, during the mid-1860s, immigrants from Finland, Sweden, Norway and Denmark began to call the city home. Migrant workers from Mexico and Latin America also interspersed. Later, immigrants came from Germany, Italy, Greece, Poland, and Southern and Eastern Europe. These immigrants tended to settle in the Northeast neighborhood, which remains ethnically rich and is particularly known for its Polish community. Jews from Russia and Eastern Europe began arriving in the 1880s and settled primarily on the north side of the city before moving in large numbers to the western suburbs in the 1950s and 1960s. Asians came from China, the Philippines, Japan, and Korea. Two groups came for a short while during U.S. government relocations: Japanese during the 1940s, and Native Americans during the 1950s. From 1970 onward, Asians arrived from Vietnam, Laos, Cambodia and Thailand. Beginning in the 1990s, a large Latino population arrived, along with immigrants from the Horn of Africa, especially Somalia. The metropolitan area is an immigrant gateway that had a 127% increase in foreign-born residents between 1990 and 2000.The U.S. Census Bureau estimates the population of Minneapolis to be 422,331 as of 2017, a 10.4% increase since the 2010 census. The population grew until 1950, when the census peaked at 521,718, and then declined until about 1990 as people moved to the suburbs.

Question: where did immigrants come from  during the mid 1860s?
Germany, Italy, Greece, Poland, and Southern and Eastern Europe