Having more farmland during a war would allow for a larger capacity to produce food to feed the army. As the infantry is focused on the battle, things like food and other essential commodities increase in their intrinsic value because of what it represents, in that food gives energy to troops and the troops need energy to fight and win the war and/or battles. Napoleon and Frederick the Great are both attributed with saying "An army marches on its belly". Meaning fighting needs fuel and that fuel for soldiers is food, thus the importance of having a significant amount of farmland.
It was primarily" "high mountain ranges" that was the physical barrier that helped separate ancient China from Southeast Asia, since these were very difficult to traverse. <span />
Italy had three advantages that made it the birthplace of the Renaissance: thriving cities, a wealthy merchant class, and the classical heritage of Greece and Rome. Overseas trade, spurred by the Crusades, had led to the growth of large city-states in northern Italy. The region also had many sizable towns.
