This thesis examines the Austrian-Hungarian population development in the late 19th and early 20th century, considering the mass emigration to the United States of America. Until the beginning of World War I in the year 1914, enormous migration movements took place throughout Europe. At that time, the United States of America was the most popular country of immigration. It was seen as a country of unlimited possibilities and quick wealth. In the year 1907, the mass emigration from Austria ? Hungary to the United States reached its highest peak with nearly 140.000 emigrants. Pioneers, emigration agents and the media were essential for the transmission of information and experiences to future emigrants. The emigration was supported by the improvement of infrastructure throughout the country. The steamer was the major form of transport. The cheap ticket sale, caused by the existing competition, also pushed the emigration movement further. Neither the government nor the army was pleased with the increasing number of emigrants. Nevertheless, there were no strict legislative regulations as far as the emigration from Austria ? Hungary was concerned. Many emigrants did not want to stay in the United States for the rest of their lives. Their major intention was to earn enough money in order to return to their country of origin, buy some land and have a family. Others went to the USA on their own, tried to settle down and a few years later, their families joined them in order to live there together. What most emigrants had in common was the desire of wealth and prosperity.