Why Does the German Constitution, the Basic Law, So Prominently

Why does the German constitution, the Basic Law, so prominently protect civil liberties?

A) In order to be compliant with European Union regulations
B) Because it was required to do so by the European Court of Human Rights
C) In response to the historical experiences of Nazi Germany
D) Because it was required to do so by the United States when Berlin was reunified
E) As the result of long-term political advocacy by civil libertarians