The foreign traders would make themselves masters of this land. Diamonds as big as your fist decorated the thrones of dozens of princes ruling over millions subjects. Over the succeeding centuries, merchants and adventurers would follow this route to lands rich in spice and silk. 6, 2018 - In 1488, the Portuguese explorer Bartolomeu Dias rounded the Cape of Good Hope, discovering a sea route to India and opening up the Indian Ocean for European trade. Indian Themed Expansion to Europa Universalis IV Released