This book compares the cross-border integration of infrastructures in Europe such as post, telecommunication and transportation in the 19th century and the period following the Second World War. In addition to providing a unique perspective on the development of cross-border infrastructures and the international regimes regulating them, it offers the first systematic comparison of a variety of infrastructure sectors, identifies general developmental trends and supplies theoretical explanations. In this regard, integration is defined as international standardization, network building and the establishment of international organizations to regulate cross-border infrastructures.