the world's five
oceans (after the Pacific Ocean, Atlantic Ocean, Indian Ocean, and
the recently delimited Southern Ocean). The Northwest Passage (US
and Canada) and Northern Sea Route (Norway and Russia) are two
important seasonal waterways. A sparse network of air, ocean, river,
and land routes circumscribes the Arctic Ocean.

Argentina
In 1816, the United Provinces of the Rio Plata declared
their independence from Spain. Eventually, Bolivia, Paraguay, and
Uruguay went their own way, but the area that remained became
Argentina. The country's population and culture were subsequently
heavily shaped by immigrants from throughout Europe, but most
particularly Italy and Spain, which provided the largest percentage
of newcomers from 1860 to 1930. Up until about the mid-20th century,
much of Argentina's history was dominated by periods of internal
political conflict between Federalists and Unitarians and between
civilian and military factions. After World War II, an era of
Peronist authoritarian rule and interference in subsequent
governments was followed by a military junta that took power in
1976. Democracy returned in 1983, and has persisted despite numerous
challenges, the most formidable of which was a severe economic
crisis in 2001-02 that led to violent public protests and the
resignation of several interim presidents. The economy has since
recovered strongly since bottoming out in 2002. The government
renegotiated its public debt in 2005 and paid off its remaining
obligations to the IMF in early 2006.

Armenia
Armenia prides itself on being the first nation to formally
adopt Christianity (early 4th century). Despite periods of autonomy,
over the centuries Armenia came under the sway of various empires
including the Roman, Byzantine, Arab, Persian, and Ottoman. During
World War I in the western portion of Armenia, Ottoman Turkey
instituted a policy of forced resettlement coupled with other harsh
practices that resulted in an estimated 1 million Armenian deaths.
The eastern area of Armenia was ceded by the Ottomans to Russia in
1828; this portion declared its independence in 1918, but was
conquered by the Soviet Red Army in 1920. Armenian leaders remain
preoccupied by the long conflict with Muslim Azerbaijan over
Nagorno-Karabakh, a primarily Armenian-populated region, assigned to
Soviet Azerbaijan in the 1920s by Moscow. Armenia and Azerbaij