As early as in the middle of the 12th century, Germany began to migrate to Eastern and southern European countries, mainly the river Rhine and the Republic of the Ukraine and Russia. There were “Germany Republic” in many of Russia's small States, such as the Black Sea, the Caucasus, even in the Volga, and the members of the Republic were immigrants from Germany. They got along with Russia people really well until the time when Stalin used military forces destroyed the “Republic”, as a surprise for Hitler to the Soviet Union's reprisal in 1941. The Germany people were deported to the Soviet Union in Asia, many of them later went back to Germany after reunification. From 1680 to 1760, a large number of German immigrants went to North America. There were a variety of the reasons for the migration, and the following two are the main internal causes. First, in the Central Europe, people couldn’t get right to have land. And second, there was persecution of certain religious groups and military recruitment. The main external reason is that the economic conditions were better in the Newland area (particularly for farmers who could own land). In 1790, the first time of United States Census, German immigrants had around 9% of all population. Before 30’s of the 19th century, the Germany mainly emigrated towards Eastern and southern Europe. They left the Europe later on because of forced migrations, cultural repression. After 1830, Germany mainland immigration trended to go to western part, and 90% of the emigrations chose to go to the United States. In change from an agricultural society to an industrial society, from the desire for freedom, and expected to be better economic environment, a large number of people in Europe went to the Americas, Germany was no exception. About half of American-German chose to go to the cities, while the other half went to farms around the Midwest area. Until the mid of 20th century, because Germany people preferred to stay on the farm than other people, they were dominance of the central and western rural areas. From the early 19th century until the outbreak of the World War I, there were