Answer:
Answer is D.
Step-by-step explanation:
In the second half of 15th Century many European countries wanted to find a sea route to India. Main reason for that was the continental blockade of the old Silk Road. Countries such as Spain, Portugal and later France, England etc were sending their sailors in different directions which lead to the finding of new sea routes, but also some continents. During this period they started exploring this new areas and later on colonizing them.