Spices made valuable preservatives, but trafficking in them had other, sinister implications. They were also used, and used more often, to disguise the odors and the ugly taste of spoiled meat. The regimes that encouraged and supported the spice trade were, in effect, accomplices in the poisoning of their own people. Moreover, medieval Europeans were extremely vulnerable to disease. This was the down side of exploration. The discoverers and their crews had carried European germs to distant lands, infecting native populations. Then, when they returned, they bore exotic diseases which could
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