Spices from India, E Asia, and the East Indies were in demand from ancient times; they were carried by caravan across China and India to ports of the Mediterranean Sea or the Persian Gulf and thence to the marketplaces of Athens, Rome, and other cities, where they were sold at exorbitant prices. Certain spices were used as media of exchange; Alaric I is said to have demanded pepper as part of the ransom for raising the siege of Rome in 408. In the early Middle Ages few spices reached the markets of Europe, but trade was slowly resumed in the 9th cent. and was later greatly stimulated by the Crusades. In Western Europe the desire for spices arose in part from the monotony of the diet and from poor facilities for the preservation of food, especially of meat.
When overland trade routes from Asia were cut off by the Mongols and Turks, the European demand for spices was a major factor in motivating a search for new trade routes around Africa and across the Atlantic and Pacific oceans. The high price obtainable for spices was partially responsible for the bitter rivalry of European powers for the control of spice-producing areas and of trade routes. Even after adequate supplies of spices were found and means of transportation made available, the cost long remained very high in Europe and in America. This was largely because of the expenses incident to attempts to retain monopoly of markets and to deliberately limit crops in order to secure high prices.
Although spices today are still important in trade, their per capita use for flavoring food has declined in Western civilizations, and certain spices must compete with synthetic flavorings. The demand for spices has remained large in Asia, where spices have a wider social and ceremonial significance than they ever attained in the West.
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