Between 1864 and 1920, 50,000 Danes emigrated from Schleswig, Jutland, where the use of Danish language was banned in schools following the Danish defeat in the Second Schleswig War and Prussia seizing control. They were called North Slesvigers, however, most of these Danes are recorded in the census statistics as immigrants from Germany rather than Denmark. Most Danes who immigrated to the United States after 1865 did so for economic reasons. By 1865, there had been a large increase in the Danish population in Europe because of the improvement in the medicine and food industries. It caused a high rate of poverty and ultimately resulted in a significant and rapid increase in Danish migration to other countries. Another reason for migration was the sale of lands. Many Danes became farmers in the United States. During the 1870s, almost half of all Danish immigrants to the United States settled in family groups. By the 1890s, family immigration made up only of 25 percent of the total. It has been suggested that many of these immigrants eventually returned to Denmark.