Timeline Monday 6 September 1480

Events on Monday 6 September 1480 1

• 1480 Treaty of Toledo Castile and Portugal confirm the division of Atlantic exploration rights Castile and Portugal signed a treaty at Toledo ratifying the terms of the earlier Treaty of Alcacovas, confirming Isabella I as Queen of Castile and settling rival claims over the Canary Islands, Madeira, the Azores, and the West African coast. The agreement shaped the two kingdoms' later competition over Atlantic and African exploration.