Afroeurasian 27 expanding networks expanding routes

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Unformatted text preview: Afroeurasian 27 Expanding Networks: Expanding Routes Routes • A number of large states, or empires, appeared in Big Era Four. • Empire­builders had to move troops and supplies, dispatch messages, gather intelligence, and collect taxes. • These tasks required good systems of communication and transport by land and sea. • These systems were created mainly to serve the empire’s government and army. • But they also served as highways of commerce, cultural exchange, and migration. An empire is a state that unites many territories and diverse peoples under one ruler or government. 28 Expanding Networks: Expanding Routes Routes Roman Roads The Romans built an The extensive network of roads. Over 50,000 miles of paved roads, tracks, and trails radiated from the Forum in the center of Rome to all parts of the empire. all 29 Expanding Networks: Expanding Routes Routes Though built primarily to speed Though troops and supplies, Roman roads were used for commercial purposes, too. Goods were shipped to distant provinces and beyond. beyond. Constructed by skilled engineers, Constructed the roads were strong enough to support half-ton wagons and wide enough to allow two-way traffic. enough 30 Expanding Networks: Routes Routes The Silk Roads was a network of roads, The tracks, and trails ran across Inner Eurasia. Most of this region is part of the Great Arid Zone, the belt of dry country that extends across Afroeurasia. across Inner Eurasia Gr e Zon id t Ar ea 31 Expanding Networks: Expanding Routes Routes Inner Eurasia is a region of grassy steppes, rugged mountains, and forbidding deserts. This terrain is hard to cross. Despite these harsh conditions, humans have been carrying goods, ideas, and technologies along the Silk Roads of Inner Eurasia for millennia. I n n e r E u r a s i a 1997, Encyclopedia Britannica Inc 32 Expanding Networks: Expanding Routes Routes Domestication of the horse, ox, and camel made Domestication humans more mobile. humans About 3000 BCE, people in the steppes of Inner About Eurasia began to take up pastoralism. Because they moved with their herds, they typically did not grow crops. crops. Instead, they traded with farmers and city-dwellers Instead, for food and o...
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This document was uploaded on 01/03/2014.

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