Answer:
Gold coins, glassware, grapevines, jewelry, artwork, perfume, wool, linen textile and olive oil were traded throughout the Mediterranean Basin.
Sumerian it has been around since 3300 BC
Slavery. north wanted one country. south wanted to become separate nation
Because of the trading posts in Lisbon, it became the only entrance point for Asian goods into Europe. It was either that or deal with the Arab traders through the middle east and that was not economically viable, so they all started trading with Portugal.