Sumer had a surplus of "food", due to the fact that they were an agrarian outcome of the Neolithic Revolution. This meant that people could focus on other activities besides farming. <span />
A. Transcontinental railroad
The North came out in relatively good condition. This is speculated to be due to the war being fought mostly in the south and that the north won, and when you see how the south was left in shambles, you can assume that the North was having a great time post-civil war.
B) COPPOR TOOLS AND SALT - this is most likely to be the Ottoman commodities because salt found in great quantities in Africa is close to the Mediterranean, which the Ottomans would have controlled
The answers are not....
A - tobacco and cane sugar come primarily from the americas
C - silk rugs and colorful tiles are mainly Persian and East Asian exports
D) - spices and fragrant rice would have mainly come from India at the time