Answer:
One ethnic group tried to eliminate the other in the 1990s, and the world failed to respond with force.
Well, all the civilizations did sacrifices, but ( you may need to check just be sure) i think the Incans did the least of it. The Mayans did it a bit more regularly then the Incans and the Aztecs did the most. hope this helps!
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.
The answer is D have a good day