What advantage did portugal have that let it begin exploration before other european nations?

I believe the answer is: Its Atlantic ports were not under the control of the Moors.

The atlantic ports were really crucial for European countries to access The American contient. Due to the invasion of the Moors, Other European countries beside portugal felt that conducting an Exploration Eastwards would be extremely costly. This is why Portugal have a head start to explore the continent before other European countries

the ss was the main organization responsible for the genocidal murder of around six million people of european ethnic minorities, essentially jews, in the holocaust. the members of all its branches committed war crimes and crimes against humanity during the second world war (1939-1945). likewise, the ss were involved in commercial enterprises and exploited the inmates of the concentration camps as slave laborers.

the tortures and assassinations committed by the ss were the result of an ideology developed long before the armed conflict, this ideology was based on the racial supremacy of the germans over the rest.