According to Bernard of Clairvaux, the goal of the crusade was to battle the pagan Slavs "until such a time as, by God's help, they shall either be converted or deleted".
Native American tribes had treaties violated and were forcibly removed from their homes by the U.S. government
Option: A
Explanation:
U.S government forcefully removed native Americans from their land. Native Americans refers to those who lived in the continent from their initiation. Their culture, tradition was different from the general public of United States. U.S government behave with them in a very brutal way and compelled them to leave their native place forcefully.
But still now they exist. At present they are facing educational challenges. They are not getting adequate facilities, qualified teachers, willing students to do more higher studies. Maximum students are dropping out their education in the mid of school.
Better Technological advancements. Boats how there were two types of sails and also the invention of the compass and the astrolobe. Hope it helps.