What Mormon belief led to organized violence against Mormons and decades of conflict with state and federal government?

What Mormon belief led to organized violence against Mormons and decades of conflict with state and federal

government?

a. The belief in tithing a percentage of income to the the Church of Jesus Christ of Latter­Day Saints

b. The belief in polygamy and a Mormon man's duty to take as many wives as he could support

c. The belief that Israelites and Jesus Christ had appeared in America