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America
Communications: Telephones: main lines in use: 194
million (1997); mobile cellular: 69.209 million (1998).
Radio broadcast stations: AM about 5,000, FM about
5,000, shortwave 18 (1998). Radios: 575 million (1997).
Television broadcast stations: more than 1,500
(including nearly 1,000 stations affiliated with the
five major networks—NBC, ABC, CBS, FOX, and PBS; in
addition, there are about 9,000 cable TV systems)
(1997). Televisions: 219 million (1997). Internet
Service Providers (ISPs): 7,000 (2002 est.). Internet
users: 165.75 million (2002).
Transportation: Railways: total: 194,731 km mainline
routes (2000). Highways: total: 6,334,859 km; paved:
3,737,567 km (including 89,426 km of expressways);
unpaved: 2,597,292 km (2000). Waterways: 41,009 km of
navigable inland channels, exclusive of the Great Lakes.
Ports and harbors: Anchorage, Baltimore, Boston,
Charleston, Chicago, Duluth, Hampton Roads, Honolulu,
Houston, Jacksonville, Los Angeles, New Orleans, New
York, Philadelphia, Port Canaveral, Portland (Oregon),
Prudhoe Bay, San Francisco, Savannah, Seattle, Tampa,
Toledo. Airports: 14,801 (2002).
International
disputes: prolonged drought in the Mexico border
region has strained water-sharing arrangements; 1990
Maritime Boundary Agreement in the Bering Sea awaits
Russian Duma ratification; maritime boundary disputes
with Canada at Dixon Entrance, Beaufort Sea, Strait of
Juan de Fuca, and around the disputed Machias Seal
Island and North Rock; The Bahamas have not been able to
agree on a maritime boundary; US Naval Base at
Guantanamo Bay is leased from Cuba and only mutual
agreement or US abandonment of the area can terminate
the lease; Haiti claims Navassa Island; US has made no
territorial claim in Antarctica (but has reserved the
right to do so) and does not recognize the claims of any
other state; Marshall Islands claims Wake Island.
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