Alexander led his army to conquer the swat valley and the Swati villagers fled to the mountains asking for a divine protection and they believe that their Gods will protect them because the mountain is so high. In order to conquer and to prove his power Alexander build a wooden ramp to place his catapults and arrow units and also he climbed up so he could hold the star of Jupiter representing his power and greatness.
Answer:
Simply the Portguese came to China to spread Christianity and to trade with them.
(C) For the longest time Europeans and other outsiders could not travel into central Africa due to the various disease they were not immune or accustomed to, as it meant almost certain death for anyone not native to the area.
