Original: The choice of Bonn was made mainly due to the advocacy of Konrad Adenauer , a former Cologne Mayor and Chancellor of West Germany after World War II , who came from that area , despite the fact that Frankfurt already had most of the required facilities and using Bonn was estimated to be 95 million DM more expensive than using Frankfurt .
Simplified: Bonn was the choice of Konrad Adenauer , a former Cologne Mayor and the first Chancellor of West Germany after World War II , who came from that area . Frankfurt am Main had most of the needed facilities already , so using Bonn meant spending about 95 Million DM to building new roads and building .