Now this is what's is hilarious. Republicans will ask that question. There have many black civilizations. We can see their evidence today. But every time Republicans are put into power, they bring down the government or the economy. They insist it's simply "bad timing".
Most hilarious of all, the Republicans are about 90% conservative. Conservatives are Confederates. Their greatest success as a "civilization" has been in the deep south, depending on the African Americans who were their slaves. And you can bet it's a conservative Republican, in a smug voice, asking the question, " Are blacks capable of runing a civilized society?" So the answer is "Yes, they ran yours".