The correct answer is d. hunting -gathering.
Hunting and gathering was already existing before this : in fact the neolithic revolution was going away from this lifestyle and starting farming and domestication of animals.
Answer:
It was on 9 November 1989, five days after half a million people gathered in East Berlin in a mass protest, that the Berlin Wall dividing communist East Germany from West Germany crumbled. East German leaders had tried to calm mounting protests by loosening the borders, making travel easier for East Germans.
By appointing the chair and a majority of the members