He believed Missouri was the Promised Land the Saints should Occupy

This was the biggest mistake of Joseph Smith's life. One that resulted in the deaths of many of his followers and the loss of their property. And was the cause of several Mormon Wars.

And in a few years, it turned into the American Civil War, that devastated America for a hundred years. Until LBJ and his Civil Rights.

Missouri now, two hundred years later, is a normal place. It's hard to imagine it as it was: with dead bodies everywhere.