Friedrich Ebert played a significant role in bringing about the Weimar Republic's constitution following the First World War. He remained president of the Weimar Republic until 1925.
Citation:
Editors. "Friedrich Ebert elected President of German republic".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=12663, accessed 18 June 2013.]