B. Horses. I doubt they'd kill their own mounts unless they had to.
Question 1: 1/3
Question 2: The south
Question 3: The cotton gin
Question 4: N/A
Greece is a crossroad of cultures, it is in Europe, but also it is near Egypt and the East. So it had a big exchange of ideas and philosophy, it developped science and trade, and being surrounded by the sea, it developped maritime skills (military and trading fleet). This lasted form antiquity to modern history.
