Original: Representatives of 12 states and kingdoms signed the convention: Baden, Belgium, Denmark, France, Hesse, Italy, the Netherlands, Portugal, Prussia, Switzerland, Spain, and Württemberg.
Simplified: The official delegates came from Baden, Bavaria, France, Britain, Hanover, Hesse, Italy, the Netherlands, Austria, Prussia, Russia, Saxony, Sweden, and Spain. The first national societies were founded in Belgium, Denmark, France, Oldenburg, Prussia, Spain, and Württemberg.