Which two events directly led to the beginning of european exploration

The answer is A and C( The decline of the silk road and the fall of Constantinople). I just did the test on plato

Explanation:

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

d. the right to establish a one-house legislature