A. Spanish conquistadors bring their horses with them across the Atlantic. Some horses escape or swim to shore after a ship sinks. The Plains Indians become expert horsemen and buffalo hunters.
This was certainly not intentional since hardly the conquistadors would want their enemies to be stronger.
B. B. Rats are aboard European ships coming to the Americas. The rats spread disease and hunt unknown numbers of smaller animals to extinction.
This is hardly intentional. Rats were almost unavoidable back then and the Europeans just did not care much about them. They weren't thinking about how the rats would cause trouble in the Americas. They were "just rats".
So the only intentional one is:
C. Columbus brought pigs to the Americas on his second voyage. The pigs provided a valuable source of food for a growing population.
Columbus brought pigs for them to serve as food eventually and so they did.
Answer:
Option: C. Columbus brought pigs to the Americas on his second voyage. The pigs provided a valuable source of food for a growing population.
Explanation:
Columbus brought pigs in the New World on his second voyages during Columbia exchange for the Spanish settlers who were increasing in numbers. Pigs became a source of food for the settlers apart from fish and crops. Settlers in the New world used the pigs not only for consumption as fresh meat but use the meat for making salt pork to preserve it for longer.
