On October 29th, 1962, in the middle of the Cuban Missile Crisis, the contiguous United States (the 48 adjoining U.S. states + the District of Columbia) are suddenly replaced by the same chunk of land from a universe where humanity never evolved.
Other than obvious stuff like the world economy being thrown into utter chaos and the Soviet Union being left as the sole global superpower, what is the fallout of this?
What happens to the remnants of America (Alaska, Hawaii, American Samoa, the U.S. Virgin Islands, Northern Mariana Islands, Guam and Puerto Rico) as well as the nations aligned with the United States? How is the "Event" viewed in the aftermath (act of God, freak natural event, glitch in the matrix, aliens)?