Until 1914, the dynamics of colonization were the primary driving factor of international migration. The desire of nation-states to regulate national population and to provide individuals one nationalization under the protection of legal institutions contributed to the rise nationalism. Although the countries of emigration like Germany opt for nationality laws based upon jus sanguinis (German nationality law of 1913), countries of immigration like the United States and France developed political citizenship based upon jus soli. In the old continent, migration and international relations are shaken by the outbreak of World War I. The war in Europe stopped economic migration and revived national boundaries, it nurtured the rise of intense forms
