Where was the Mormon religion founded?
Well, that depends on how you look at it... but the standard answer is probably upstate New York, where Joseph Smith lived when God appeared to him.
There is no country in which the Mormonism is the principal religion. The Mormons now a day are basically in every country of the planet, with a few exceptions, but no country has adopted the Mormonism as the principal religion of its land. There was a state though, in the United States, that was founded and originally settled by Mormons only, and until not too long, it was considered to be the Mormon state, this…
Members of the Church of Jesus Christ of Latter-day Saints (commonly called the 'Mormon' Church) believe that Jesus Christ is the founder of their religion. They believe that their religion is the restoration of the original New Testament Christianity. This true Christianity was restored to the Prophet Joseph Smith, Jr. by Jesus Christ himself. You can learn more about this restoration at the "Related Links" below.