source site Besides the power of expanding one’s Empire, it was trade and commerce, and of course, money.
source link The silk and spice trade, involving spices, incense, herbs, drugs and opium, made the Mediterranean city-states phenomenally rich. Spices were among the most expensive and demanded products of the Middle Ages, as they were used in medieval medicine, religious rituals, cosmetics, perfumery, as well as food additives and preservatives.
go site Sailors and traders were driven by profit and would sail all over the world to obtain it.
follow site Did you know that sugar, spices and silk were part of the luxury goods markets in Europe at the time? Were you aware of the Medieval spice trade?
http://www.dramauk.co.uk/?arapyza=%D8%A3%D9%81%D9%83%D8%A7%D8%B1-%D8%AC%D9%8A%D8%AF%D8%A9-%D9%84%D9%83%D8%B3%D8%A8-%D8%A7%D9%84%D9%85%D8%A7%D9%84&a0e=d9 [Source: https://en.wikipedia.org/wiki/Age_of_Discovery]