The courageous sailors undertook the task of finding out the marine routes.

Ans. 1. The traders in Europe were curious to begin trade in the eastern nations. 

2. Henry, the King of Portugal motivated sailing or seafaring. 

3. The sailors were inspired by kings and business persons of Europe to discover new sea route. 

4. As  a result, the courageous sailors undertook the task of finding out the marine routes.