Iowa (1983: Doomsday)

Pre-Doomsday
The nation of Saudi Arabia had the world's largest supply of oil, but most of the nation's citizens were living on less than minimum wage. New Germany's founder Theo Albrecht saw the storm clouds on the horizon, and purchased a large estate in Medina, and hired priate security to gaurd it. He eventually started spending all his time there.

Post-Doomsday
After Doomsday, the Saudi oil wells go silent. Most of the population is now unemployed. This starts a famine that quickly decimates the population. This famine upgrades certain diseases to epidemic levels. All this and a viscious Civil War means that the entire Saudi Arabian population is deceased by the end of the year. Albrecht takes his chance and seizes control of Medina. He declares the establishment of the Federal Republic of New Germany. He pays to have German survivors evacuated to New Germany to bolster the population. They either go by sea or by air.