North America: Continent of Contrasts

North America—the third-largest continent (24.7M km²)—stretches from the Arctic Circle to the Panama Canal, encompassing climatic extremes, cultural diversity, and economic power.

Geographic Framework

• Countries: Canada, USA, Mexico, Greenland (Denmark), Bermuda (UK), St. Pierre & Miquelon (France)
• Subregions: Northern America (Canada, US, Greenland, etc.), Middle America (Mexico, Central America, Caribbean)
• Physiography: Canadian Shield, Appalachians, Interior Plains, Rockies, Great Basin, Sierra Madre, Coastal Ranges

Climate Spectrum

• Arctic/Tundra: Nunavut, Greenland, northern Alaska
• Subarctic/Boreal: Most of Canada, interior Alaska
• Temperate: US/Canada border zone, Pacific NW, Northeast
• Subtropical: US Southeast, Gulf Coast, Northern Mexico
• Tropical: South Florida, Hawaii, Yucatán, Caribbean
• Arid/Semi-arid: Southwest US, Northern Mexico, Interior basins

Human Geography

• Population: ~600M (US 335M, Mexico 128M, Canada 39M, Guatemala 18M, etc.)
• Languages: English, Spanish, French, Indigenous (Navajo, Cree, Inuktitut, Nahuatl, Maya, 100s more)
• Megacities: Mexico City (22M), NYC (19M), LA (13M), Chicago (9M), Toronto (6M), Dallas (8M)

Economic Weight

• GDP: ~US$29T (US $27T, Canada $2T, Mexico $1.4T) — ~28% global
• Trade: USMCA (NAFTA successor) integrates 500M consumers
• Resources: Oil/gas (TX, AB, Gulf), minerals (Canadian Shield, Andes), agriculture (Plains, Central Valley, Bajío)

Historical Arc

• Peopling: Beringia (15-25K ya); Clovis, pre-Clovis
• Complex Societies: Mississippian, Ancestral Puebloan, Mesoamerican (Maya, Aztec), Andean (Inca — South America)
• Colonization: Spanish, French, British, Dutch, Russian
• Independence: US (1776), Haiti (1804), Mexico (1821), Canada (1867 grad.), others 19th-20th c.

Contemporary Challenges

Climate change (Arctic amplification, hurricanes, drought), inequality, migration, indigenous rights, democratic stress, infrastructure decay, biodiversity loss.

North America is not a monolith—it's a continent of contested borders, shared waters, and intertwined futures.