The World's Most Important Crop Before 1900: Wheat

Until the 20th century, wheat was humanity's single most important crop. Domesticated ~10,000 years ago in the Fertile Crescent, it became the staple grain of Europe, North Africa, the Middle East, and Central Asia.

Why Wheat Dominated

• Nutrition: High gluten = leavened bread, pasta, couscous, noodles—calorie-dense, storable, portable.
• Adaptability: Grows in temperate zones worldwide; spring/winter varieties extend range.
• Yield & Storage: Good yields, stores years if dry—critical for famine resilience.
• Cultural Centrality: "Daily bread" in Christianity; tax base of empires (Rome, Ottomans, China's north).

Runners-Up

Rice (Asia), maize (Mesoamerica/Andes), barley (cool margins), millet/sorghum (arid Africa/Asia). But wheat's geographic sweep and civilizational role were unmatched until maize and rice surged with 20th-century irrigation, fertilization, and Green Revolution varieties.