- The flex circuit connectors are made in China because the US supplier base migrated to Asia.
- The electrophoretic display is made in Taiwan because the expertise developed from producting flat-panel LCDs migrated to Asia with semiconductor manufacturing.
- The highly polished injection-molded case is made in China because the U.S. supplier base eroded as the manufacture of toys, consumer electronics and computers migrated to China.
- The wireless card is made in South Korea because that country became a center for making mobile phone components and handsets.
- The controller board is made in China because U.S. companies long ago transferred manufacture of printed circuit boards to Asia.
- The Lithium polymer battery is made in China because battery development and manufacturing migrated to China along with the development and manufacture of consumer electronics and notebook computers.
A good article on Forbes by Steve Denning. The followup articles are also worth reading.