You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Let us ignore plausiblity, and look at the question.
What would the effect be on Europe if BRD wasn't establish after WWII, but the Länder was kept as seperate countries, a few will likely have to be killed off (Bremen specifict) to make it work.