How did the development of farming influence the movement of early American Civilization such as the Olmec and the Mayan? a. Farming created bitter rivalries because nomadic tribes fought over precious resources such as grains and seeds b. Farmer no longer had to keep moving to find their food and were able to settle in one place and build permanent billiards c. People were constantly on the love in search of fertile land in which to plant enough food to feed their families d. Farmer became the ruling class and no told tribes to move