| 25 April 1974 |
Portugal
|
Non Aligned movement
|
Carnation Revolution begins the end of Portuguese dictatorship and empire
|
| 25 April 1974 |
Portugal
|
Racism
|
The Portuguese dictatorship falls amid prolonged colonial wars
|
| 19 September 1761 |
Portugal
|
International history trans-atlantic slavery
|
Portugal declares enslaved people entering the metropole free
|
| 7 June 1494 |
Portugal
|
International history trans-atlantic slavery
|
Treaty of Tordesillas divides Iberian claims across the Atlantic
|
| 8 January 1455 |
Portugal,
West Africa
|
International history trans-atlantic slavery
|
Romanus Pontifex extends Portuguese claims over African trade
|
| 18 June 1452 |
Portugal,
West Africa
|
International history trans-atlantic slavery
|
Papal bull Dum Diversas authorizes Portuguese conquest and enslavement
|