* emperor wu di wanted iranian warhorses and sent his general zang qian to find them
* no luck but found the way to the west
* both europeans and asian traders travelled the routes
* stopped at markets to trade and sell things like spices, silk, diseases, ideas, stain, hemp, technology, animals, plants, slaves
* asian traders sold silk, teas, porcelain
* india traded spices, ivory, textiles, precipus stones, pepper
* romans traded gold, silver, fine glassware, wine, carpets, jewels