Charles Taze Russell was an influential American religious leader and the founder of the Bible Student movement. He began publishing his religious views in 1879 with the journal 'Zion's Watch Tower and Herald of Christ's Presence.' Russell's teachings and writings challenged many traditional Christian doctrines, attracting a dedicated international following. His work laid the foundation for several religious groups, most notably the Jehovah's Witnesses, who continue to be influenced by his eschatological interpretations.