The crusaders were trying to promote Christianity. They did this not by converting, but mainly by fighting others (infidels). During the crusades many people were killed. The crusaders were hypocrites because they believed that is is acceptable to kill in the name of a religion that explicitly says "Thou shallt not kill".
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At the same time, they occupied the heart of prime bison range which was also an excellent region for furs, which could be sold to French and American traders for goods such as guns. The Lakota became the most powerful of the Plains tribes.
Missouri admitted as a slave state.Maine admitted as a free state.Slavery disallowed in future territories north of 36°30' except within Missouri itself.