The influence of religion in the US during this time was perhaps most notable in New England, where the Puritans used their hard work ethic to build the societies that would soon blossom into thriving cities. In the Southwest, religion took more of a backseat, and was more about worship than a way of life.
I'm pretty sure it would be B, because the tensions between most groups are mainly to do with religious differences, especially relating to the belief of how many gods exist.
I presume you are talking about the 1930s, and if so, the economy during the 30s was in shambles and the period was called the great depression. Unemployment was at an all time high and people were starving due to extreme poverty.
Mesopotamia, it is now a nation in Iraq. It was the first to form cities.