Unit 2 Trade Networks (c. 1200–1450): How Afro-Eurasian Exchange Shaped Economies, States, and Cultures

Silk Roads

A web of overland trade routes linking East Asia, Central Asia, Southwest Asia, and parts of Europe; exchange usually happened in segments between connected markets rather than by one traveler going end-to-end.

High-value, low-bulk goods

Expensive items that are light or compact (high worth per pound), making them profitable to transport long distances overland (e.g., silk, porcelain).

Cultural diffusion

The spread of ideas, religions, technologies, and artistic styles across societies through contact such as trade, travel, and migration.

Oasis (trade hub)

A water-source settlement in arid regions where Silk Roads trade clustered; served as a rest, resupply, and exchange point along desert routes.

Sogdian merchants

Central Asian trading communities known for acting as commercial and cultural brokers (middlemen) along major stretches of the Silk Roads.

Caravanserai

A roadside inn on overland trade routes that provided lodging, storage, food, and information exchange for merchants and caravans.

Pax Mongolica

“Mongol Peace”; the period when Mongol rule reduced some risks and increased predictability across Eurasia, encouraging trade and travel along overland routes.

Mongol postal relay system

A relay network of messengers and stations used to speed communication and administration across the Mongol Empire, helping make governance and commerce more reliable.

Yuan Dynasty

The Mongol-ruled dynasty in China, one of the major Mongol khanates that helped integrate China more tightly into wider Eurasian networks.

Golden Horde

A Mongol khanate that ruled parts of the western Eurasian steppe, contributing to Mongol-era connectivity across trade routes.

Black Death

A devastating 14th-century pandemic whose spread was accelerated by increased interaction along interconnected trade routes across Afro-Eurasia.

Indian Ocean trade network

A vast maritime trading system linking East Africa, the Middle East, South Asia, and Southeast Asia; sea travel enabled cheaper movement of bulk goods than overland routes.

Monsoon wind system

Seasonally reversing winds in the Indian Ocean that sailors used to time voyages; created predictable, seasonal trading patterns and encouraged long stays in port cities.

Lateen sail

A triangular sail that improved maneuverability, helping ships travel more effectively across the Indian Ocean and supporting long-distance maritime trade.

Astrolabe

A navigational instrument used to estimate latitude, improving the reliability of open-water sailing and long-distance trade.

Diasporic merchant communities

Foreign merchant neighborhoods in port cities that reduced risk by providing trust networks, credit, translation, legal familiarity, and business connections.

Dar al-Islam

“House of Islam”; regions where Islam was influential, often connected through shared commercial, cultural, and legal ties that supported trade.

Swahili city-states

Commercial urban centers on the East African coast (e.g., Kilwa, Mombasa) that grew wealthy from Indian Ocean trade and blended African and Islamic influences.

Swahili language

A coastal East African language with a Bantu base and many Arabic loanwords, reflecting long-term trade and cultural exchange in the Indian Ocean world.

Trans-Saharan trade routes

A network of routes crossing the Sahara that connected North Africa/Mediterranean markets with West Africa through oases and trading towns.

Camel pastoralism

The use of camels (especially as pack animals) to enable large-scale desert travel; the key “technology” that made regular trans-Saharan trade feasible.

Gold–salt trade

The exchange pattern in which West African gold moved north and North African/Saharan salt moved south; driven by complementary resources and strong demand (salt for diet/preservation).

Mali Empire

A powerful West African state (1200s–1400s) whose wealth and political power were strongly supported by control and taxation of trans-Saharan trade, especially gold.

Mansa Musa

A ruler of Mali famous for his 14th-century hajj (pilgrimage) to Mecca, demonstrating Mali’s wealth and its connections to the wider Islamic world.

Timbuktu

A major West African urban center associated with Islamic scholarship and learning, showing that trade routes supported intellectual and cultural exchange as well as goods.