Why would an event like the one described in the headline most likely have not happened earlier in the 19th century?

may i have the answer choices?

they had many gains 1 one freedom for slaves the major cause of the civil war is that the   north wanted freedom for slaves but the south didn; t creaitng the civil war

another gain they have is poltiical influence

poltiical influence is a big thing everywhere even now peoplle are always trying to get the head up in poltics thats what they did by giving the republicians a good name for freeing slaves

he killed a bunch of jews so no one was spending money and the stock market rose again

he founded the house of wisdom to encourage arabic translation.

hope this is the right answer : ) : )