The FIRST step toward the reunification of Germany took place in November 1989 when __________.
a. all Germany elections were held for a single German parliament
b. the Berlin wall was opened and free entry to West Berlin was allowed
c. a plebiscite was held for the German people to vote on unification
d. Gorbachev mediated unification between leaders of the two Germanys
The correct answer is this one: the Berlin wall was opened and free entry to West Berlin was allowed. In a way this happened by mistake, when one goverment official made a mistake and announced this during a speach.