Republic of Lincoln (1983: Doomsday)

Pre-Doomsday
Before Doomsday, the state of Nebraska was the leading farming and ranching state in the United States.

Post-Doomsday
Other than the destruction of Offutt Air Foce Base, the quality of the agriculture did not falter in the slightest. Farmers quickly learned to avoid the area around the air base. In most cities of Nebraska, life went on as usual.

Establishment
Ironically the state of Nebraska was unknowing of the Federal Government's self-imposed exile from the American mainland. However, the illusion of normalcy came crashing down when a reporter from a Licoln newspaper questioned the lack of news from anywhere outside of the state. Still thinking that the world was as it was before Doomsday, they send a group of people to see what happened to the rest of the world. It was then that they told Lincoln of the terrible news. The United States officially ceased to exist on the mainland. Governor Kerrey was faced with the inescapable conclusion: they were on their own. On April 8th, 1984 the Republic of Lincoln was declared independant of the United Staes of America.