1415 – Prince the navigator, Portuguese ships captured Ceuta, freed Christian slaves and found gold was not coming from Arab-India route but across Sahara.
1420 Captured Mediera Island
1432 – Azores
1434 – Cape Bojador
1445 – Cape Verde
1456 – Cape Verde Island
1462 – Sierra Leone
1471 – Gold Coast
1474 – SaoTome Island
1484 – Christopher Columbus submitted a proposal to King John II of Portugal, claiming he could reach India (4,000 km) via west. His advisers knew it was 16,000 km away.