Spanish conquistadors brought their horses with them when they cross the atlantic which was an unintentional consequence of that action

Yes, they brought their horses with them when they crushed the atlantic.

One of the reasons was: Their intrinsic effectiveness was linked to the fact of the surprise and the fright that it caused, since, the natives thought, sometimes, that rider and horse formed one being, and others, who were immortal.

This helped the Spaniards in their battles and in the subjugation of the natives.

By the mid-1700s, the Plains Indians were expert horsemen who relied on their herds for buffalo hunting and trade.

Explanation:

I took the quiz, it was correct.

answer; the trial de novo

answer; the above statement is (true);