1448- On a small island called Arguim an important castle was built and used as a trading post for comerce with inland Africa.
1470’s Port trading ships reached the Gold Coast.
1471- Port finally captured Tangier after several attempts.
1482- Fortress of Sao Jorge Damina was built.
1483- Diongo Cao explored the congo river
1484- Port regected Christopher Colombus’s idea of reaching india from the West. They believed it would take a lot longer. The long lasting dispute resulted in the Treaty of Tordesillas with spain dividing the world equally between the Spanish and the Portuguese(along a north-south meridian line 1000 miles west of the cape Verde Islands .