The Louisiana Purchase stretched from the Mississippi River to the beginning of the Rocky Mountains. Official boundaries were not determined, except that the eastern border ran from the source of the Mississippi River north to the 31 degrees north.
Cooled (or air conditioned) seats work by confining cooled air directly in the seat where the passenger is seated. Multiple fans are put within the seat to provide air circulation. The air from the fans blows through a diffusion layer to spread the cool air throughout the seating material, cooling the whole surface.
Typically cool air is forced through the seats with fans. The cooled seats have a fan unit in the bottom of each seat that blows air through ducting to distribute across the bottom and back of the seats. If you look close enough under each seat, you can see the fan unit. I am disapointed int he A/C seats in my '07 EB.