It made a split between the North and the South economically because the North was advancing more, while the South thought the best market was slavery and cotton. Which ultimately led to the Civil War.
I would say D hope this helps thank you:)
This depends greatly on which side of the debate you're on, but in general labor should take the step of improving union relations with employers and the government.
Technology affect Aryan trade because it make their production more efficient and it provide various transportation methods for the trade.
Technology affect Aryan warfare by developing more advanced weapons that they could use in their warfare.
Hope this helps