your answer is A.) Over-Planting of wheat wore out the soil.
provide for the common defense
The answer is c. A hint would be there is lots of sand there.
The correct answer is A) De Gama found a sea route to India, Dias found a sea route to South Africa.
One difference between Vasco de Gama and Bartolomeu Dias was that De Gama found a sea route to India, Dias found a sea route to South Africa.
Dias(1450-1500was the Portuguese explorer that adventured to navigate the new routes and reach the southern tip of the African continent in 1488. Indeed, he was the first explorer from Europe to reach that far and explore this land. On the other hand, Vasco de Gama just sailed around the tip of South Africa.