In the Ancient and Medieval worlds, a great deal of the trade (in goods such as silk, spices, and glass) was conducted via the Silk Road–a trade network that ran from Europe through Northern Africa, the Middle East and Persia, India, and eventually into China. This site gives some good background on the various routes and the people who traveled them.
Website: Silk Road-History of the silk road
Humanities Scholars 
Use of Spices in Ancient India has been one of the important parts of Indian cooking. It indicates not only the types of spices used but also their cultivation in India. As the society was largely agrarian it cultivated a large variety of spices. Along with popular spices like cardamom, it also cultivated some specific spices in the form of seeds. Indian spices formed a major part of spice trade along with rest of the world. These highlight the popularity of Indian spices all over the world.
https://www.indianetzone.com/52/use_spices_ancient_india.htm
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