t, I am going to write why people migrated, and what migrants' origin was. An example in America will be a good to explain the questions. Because America's correspondence to migrants will give a hint about the way of acceptance of other culture, including migrants. After the Napoleonic War had been over in 1815, the peaceful age came around the Atlantic Ocean. The most people emigrated to America from 1815 to just before the World War(22). The French Revolution, the Napoleonic War, or an industrial revolution had brought a new period to Europe. It was the opening of free emigrants into America. The American government gave the rights of naturalization to migrants who had lived in America more than 5 years. Naturalized people had to live the state that they had applied for the rights of naturalization. They had to agree with republicanism. They could get the rights of naturalization easily if only they follow above-mentioned rule. Such a flexible correspondence of American government made emigrants to America increasing. This flexible correspondence would be a big key word of solving the problem between countries.
             In those days, there were many unemployed people in Europe. Because a population in farm villages was increasing and they could not inherit their fathers' lands and property. The people like this emigrated to America. American culture and customs were very similar to European one. So it was easy for European emigrants to be accustomed to American life.
             However emigrants' life in America was not only comfortable. Since emigrants were farmers originally in their mother country, they had big problems on various points. Especially they had huge mental culture shocks when they had to work in big factories. Although they had such a mental problem, they were lucky that they had emigrated to America. Because it came a period restricting immigrants in America later.
             To restrict immigrants firstly was many east states like as N...