USA + Canada = World's Second-Largest Nation (Bigger Than Russia? No—But Close)

A merged United States-Canada would be a geographic titan—but not larger than Russia. The math:

Land Area Comparison

*USA rank varies by measurement (total area vs. land area; coastal waters inclusion). CIA World Factbook: USA 9.83M km² (total) = #3; Canada 9.98M = #2. China 9.60M = #4.

The Correction

The prompt's premise is inverted: A US-Canada union (~19.8M km²) would surpass Russia (17.1M km²) by ~2.7M km²—becoming the world's largest country by land area.

Beyond Size: What Wouldn't Merge

• GDP: ~$28T (US) + $2.1T (CA) = $30T+ (vs. Russia $1.8T)
• Population: 335M + 39M = 374M (vs. Russia 144M)
• Military: NATO-integrated vs. standalone
• Governance: Federal republic + parliamentary monarchy = constitutional crisis
• Culture: Shared roots, divergent healthcare, guns, immigration, Indigenous rights

Bottom line: Yes, a US-Canada merger would create the planet's largest country by land—eclipsing Russia. But nationhood is more than acreage.