Effect:tensions arise with workers in cities

What event brought the us into wwii? what conflicts happened after the us entered the war? i know the first part of this question, i need with the second part.

The line dividing regions 4 & 5 on this map is known as the "fall line." which of these represents an important factor of the fall line in georgia history? a) it was the first boundary of the georgia after it became a state. b) it was an important source of power due to a change in elevation. c) it was once home to major cities that have since become abandoned. d) it was a dividing line between the united states and native american territories.

The christians in jerusalem met in the catacombs for their worship service