Which environmental change played a key role in making human survival easier and bringing about the neolithic age? a. decline in global sea level b. end of the ice age c. extinction of mammoths d. increase in cave formations

it the big letter b heart my answer

cruel, heartless

explanation:

i would think i'ts d hope this out

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