Feudalism spread from France to Spain, Italy and Germany. The feudal system was originally a by-product from the Roman Empire. As the Roman Empire crumbled and the Viking raids increased, large landowners offered land and protection to their tenants in exchange for taxes and labor. By the 11th century, most parts of Germany were dominated by aristocrats. They considered it beneath themselves to farm the land so they offered the land to tenants in exchange for food and labor. They then bore arms and dispensed justice everywhere, even on their own lands.
Perceptual regions reflect the cultural identity of the people in the region.
The Big Apple (New York City), the Midwest, the South, and New England are other examples of perceptual regions in the United States.
(Hope this helps!!)
About 11 to 20 out of every 100 veterans (or between 11 and 20%) who served in operations Iraqi Freedom and Enduring Freedom have PTSD in a given year.
About 12 out of every 100 Gulf War Veterans (or 12%) have PTSD in a given year.
About 15 out of every 100 Vietnam veterans (15%) were currently diagnosed with PTSD when the most recent study of them (the National Vietnam Veteran Readjustment Study) was conducted in the late 1980s. It’s believed that 30% of Vietnam veterans have had PTSD in their lifetime.
There isn't a exact percentage for all the veterans in the US but i hope this helps!