Answer:
c. It prevented Europeans from accessing land-based trade routes to Asian markets.
Step-by-step explanation:
When the constantinople fell in 1453, it barred many Europeans the access to Asian markets through land. It was because of this, the European nations, mainly Portugal, Spain, England, Italy, Dutch and France began to fund explorers such as columbus, magallen and vasco de gama to find new trade routes to Asian and other regions in the world.