Stronger rails allowed heavier goods to be shipped from one point to another. Larger trains allowed more load to be moved thus allowing an increase in what "people could be moved" If you have any other questions feel free to ask!
The answer that your looking for is c. "aquaculture." I hope this proves helpfull!
The most serious problems faced by settlers in Virginia<span> was that they suffered high death rates which led to labor shortages in the colony. 1 out of 10 </span>would<span>survive.</span>
This is a Spanish term used for people of mixed race - Spanish and Indigenous American.