Transnational Coupling in the Age of Nation Making during the 19th and 20th Centuries deals with courtships and marriages that transcended national, cultural and linguistic boundaries. It deals with the formation of transnational families and transnational spaces. And, finally, because the historical concept of transnational marriage provides a unique prism through which to view the interconnectedness of societies at their most intimate cultural intersections, it deals with the longstanding, complex cultural relations between France and the United States during the 19th and 20th centuries. In an effort to address not only why Franco-American marriages occurred but also how and why the dynamics that produced them changed over time, this work examines and compares two transnational marriage patterns in different historical contexts: the first, when wealthy American heiresses married French aristocrats during the second half of the 19th century--a period marked by relatively free transatlantic circulation and mobility--and the second, when borders were far more solidified--during the world wars when French women entered into matrimonial contracts with American soldiers. The purpose of this work is twofold. In an effort to provide new categories of analysis that place the human experience into broader, more global perspectives, the first is to show how concepts of transnational marriage and courtship allow the historian to move further beyond the analytical frameworks of national histories by forcing the researcher to reconsider the ways in which one thinks about family formation and the permeability of national borders during these different stages of the national project. The second is to challenge underlying assumptions in existing historiographical explanations that those who crossed national borders to couple or to marry did so for purely socio-economic reasons. Nicole Leopoldie contends that such rationalizations are simply too narrow and that at the intersection of cross-cultural encounter and transnational coupling stood a profoundly emotional experience. Therefore, greater analytical considerations need to include both cultural and emotional motivations that were always in the background. Because the social practices of courtship and marriage became mechanisms through which borders were crossed and new cultural spaces were created, they represent important elements of transnational entanglement