Honestly, none. The union didn't really have any agricultural advantages over the Confederacy, in fact, it can be argued that agriculture was one of the biggest disadvantages of the union.
the exclusive possession or control of the supply of or trade in a commodity or service.
Answer:
Genghis Khan was ruthless and very efficient when conducting scare tactics. His army was on horses, nimble and ready to surprise attack with swift strikes and to launch a hail of arrows while on the move. But most importantly he would not wage war just with soldiers but would also take hostages, torture and kill women and children and a lot more to scare his enemies into submission without too much fighting.