Question

Two things that enabled the Portuguese to begin overseas exploration were

Answer 1

Advanced navigation techniques and better cartography.

Answer 2

 The Portuguese monarchy, characterized by the centralization of power, guaranteed political stability favorable to the development of the business of the commercial bourgeoisie and the support of Portuguese nobility. This factor was very favorable to the development of maritime-commercial ventures in Portugal.

Creation in Portugal of the School of Sagres in 1417. This was a center of nautical studies of great importance for the development of Portuguese navigation. Which led to the Portuguese domain of techniques of construction of caravels and instruments of nautical orientation.