Answer:
European explorers used non-european inventions such as the astrolabe, the compass and gunpowder.
Explanation:
The Middle Ages was coming to an end in Europe when countries such as Portugal and Spain began their exploration of the Globe, however, they didn't have any instrument of navigation or protection. Their contacts with the Orient during the Crusades gave to them the knowledge and the access to several inventions and objects that could be useful to their enterprise of colonization. So, during the 14th century and mostly in the 15th century, objects such as compass, astrolabe, gunpowder and in some cases, navigation techniques, all these things were brought from the Orient, which gave to the Europeans the possibility to go ahead.
