History Lesson: Global Trade in the Pre-Modern Era

8 Trade Routes That Shaped World History

http://mentalfloss.com/article/86338/8-trade-routes-shaped-world-history

Importance of Spice Trade in World History [HIGHLY RECOMMENDED]

https://hort.purdue.edu/newcrop/Hort_306/reading/Reading%2026-1.pdf

The Indian Ocean: A Maritime Trade Network History Nearly Forgot

http://discovermagazine.com/2016/nov/trading-places

Roman trade with India
https://www.bundesbank.de/Redaktion/EN/Downloads/Bundesbank/Money_Museum/global_players.pdf

Silk Road and the East-West Trade

https://www.britannica.com/topic/Silk-Road-trade-route

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For globalization trends since 1820, see:

The Great Convergence: Information Technology and the New Globalization by Richard Baldwin