Answer:
B.by opening sea route to the west
Step-by-step explanation:
- Vasco de gama helped Portugal gain influence in the Indian spice trade through finding a sea rout from Europe to India.
- The spices found in India were on high demand in Europe but could not be availed there due to transport constraints in terms of the lack of a rout.
- Through finding the sea rout to India, then Vasco de gama helped the Portuguese travel back and forth for spice business.