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.
The Spartan government was by a small group of people-the vast majority of citizens could only vote yes or no the questions put to it. Most of the decisions were made by a small group of ephors (high ranking magistrates) constrained by the constitution of Lycurgus and the two kings.
<span>When
it was over, the Viet Cong basically ceased to be an effective force
any longer. Their ranks were decimated. All of the territory lost during
the offensive was shortly won back. But the ability of the Communists
to launch such a widespread coordinated offensive convinced the American
media and ultimately the American public that the war was now a lost
cause and demanded a withdrawal. So, tactically, it was a military
success for the U.S. but it served as a public relations success for
North Vietnam.
I believe the answer may be </span>
<span>U.S. forces dealt the Vietcong a massive military loss and regained control of all areas that the Vietcong had attacked.</span>
The answer to this is Congress
The improvements made traveling easier and more efficient
