Fortifications are militaryconstructions designed for defensivewarfare. They have been used for many thousands of years, in a variety of increasingly complex designs. The practice of improving an area's defense is also known as "fortification". Many military installations are known as forts, although they are not always "fortified".
... or older. The median age is 36 years. For every 100 females there are 96.3 males. For every 100 females age 18 and over, there are 91.6 males.
The median income for a ...