what are three reasons why the tiny european country of portugal was an epicenter for overseas exploration and trade during the 15th century?

European Expansion Overseas ... Beginning in the 1400's (15th century), western European nations (Portugal, ... The main factors that encouraged these voyages were: 1. Trade with the east 2. European curiosity about the Asia- 3. Wealth and ambition of new national states

Explanation:

answer; /// decreasing responsiveness to a stimulus to which one is repeatedly exposed;