What was the main goal of the crusades? a. to open the silk roads to traders b. to take mecca from islamic control c. to save the byzantine empire from invaders d. to take jerusalem from islamic control why did long-range voyages not follow a straight line when crossing large areas of ocean during the age of exploration? a. the mongol navy didn't allow shipping through certain areas. b. ships had to take wind and currents into account. c. ships were unable to last more than a few days away from land. d. european navigators had no idea where they were going. before the development of agriculture what was the most likely reason for groups of people to move from one place to another constantly? a. yearly floods drove people away from rivers. b. the climate in ancient times was more unpredictable. c. attacking mongols pushed people west. d. people moved as they used up local food sources. which ancient society featured a religion that believed that humans would be reborn again and again in different forms? a. egypt b. india c. olmec d. oceania