In response to the soviet attempt to undermine Germany's economy, these countries announced that they would merge their zones in Germany.
https://www.google.com/search?q=what+countries+merged+zones+in+post-wwii+germany&oq=what+countries+merged+zones+in+post-wwii+germany&aqs=chrome..69i57.14378j0j4&sourceid=chrome&ie=UTF-8
