I believe the answer is B
Answer: B) African countries were not invited nor welcomed to this meeting.
All of the 14 participants of the Berlin Conference were European, with the exception of the Ottoman Empire which, even thou it controlled some territories in northern Africa, they were autonomous territories.
Besides that fact, there was no participation by any African country, since the conference´s goal was to regulate European colonialism and trade throughout Africa.
It changed by everything going cruel and alarmed.
The separation of the Paleolithic and Neolithic Ages mark a great divide in the lives and cultures of prehistoric peoples. Many aspects of everyday life were modified to suit a new standard of living. Society, Economy, and Technology were greatly affected by the "Agricultural Revolution" that spawned the Neolithic Age.