Constitutional History in Germany in The Last 15 Years Constitutional history has today achieved a dominant place among the various categories of law. The question this raises is whether or how far contemporary problems, both national (German reunification) and international (European Union), which also pose contemporary political problems, have influenced historical research on the development of the modern constitution. The changing relationship between contemporary constitutional law and historical research on the theory and reality of constitutional development remains to be investigated. The following might serve as historical research criteria: 1) The concept and notion of the constitution; 2) their function, and 3) editions of constitutional texts in Germany in the last 15 years.