Answer: A.
Explanation: The option A is: Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore.
This is the perfect answer to why was the output tripled.
Republican the rest were shut down i guess
There is more fertile land near water and it was easier to grow crops, raise animals, and overall grow enough food to feed their community if they were close to a water source
The best option would be that Vasco da Gama "<span>b. was the first European to round the southern tip of Africa," since he was the first to find a sea route to India, which many European countries wanted to establish. </span>