What 2 things made the Portuguese exploration successful?

Under the leadership of Prince Henry the Navigator, Portugal took the principal role during most of the fifteenth century in searching for a route to Asia by sailing south around Africa. In the process, the Portuguese accumulated a wealth of knowledge about navigation and the geography of the Atlantic Ocean.

Explanation:

Under the leadership of Prince Henry the Navigator, Portugal took the principal role during most of the fifteenth century in searching for a route to Asia by sailing south around Africa. In the process, the Portuguese accumulated a wealth of knowledge about navigation and the geography of the Atlantic Ocean.

Under the leadership of Prince Henry the Navigator, Portugal took the principal role during most of the fifteenth century in searching for a route to Asia by sailing south around Africa. In the process, the Portuguese accumulated a wealth of knowledge about navigation and the geography of the Atlantic Ocean.