Where did the Jehovah's Witnesses originate?

The modern-day history of Jehovah's Witnesses began with the forming of a group for Bible study in Allegheny, Pennsylvania, U.S.A., in the early 1870's. At first they were known only as Bible Students, but in 1931 they adopted the Scriptural name Jehovah's Witnesses. (Isa. 43:10-12) Their beliefs and practices are not new but are a restoration of first-century Christianity.

Another answer from our community:

The Jehovah's Witness religion originated in America with Charles Taze Russell who was known for making prophesies that did not come true. His followers were called Bible Students. Russell was succeeded by Joseph Franklin Rutherford, after which the Bible Students became known as Jehovah's Witnesses. For some ill-conceived reason Jehovah's Witnesses believe that God has rejected his people Israel in favour of them.