The prevailing belief is that the Spanish explorers brought the first modern horses to North America on their sailing vessels. This was back in the 1500s. Historians believe that at one time, a few evolutionary predecessors of the horse lived in North America, but they have been extinct for over 10,000 years.
Actually, and I say this with respect to the asker, horses weren't introduced to North America, they originated in North America. Don't ask me how they got over to Europe and whatnot, I just know that the Dawn Horse, the first form of a horse - Equus callabus scientifically - appeared in North America about 60 million years ago.
In addition:
Between 10,000 and 8,000 years ago, horses disappeared entirely from North and South America. Various conflicting theories exist as to the reason for this, including food shortage, disease, and extinction as a result of hunting by the growing human population. They were re-introduced in the 16th century by Spanish explorers who brought their horses over by ship.
Horses were re-introduced to North America in the 1500's. Most of these horses were of Iberian descent with many of them containing Sorraia blood instead of Andalusian like once thought. However horses evolved over much of the North American continent until their extinction some 8,000 to 12,000 ( typically 10,000 years is given, but is debatable.) years ago. There is some thought that perhaps tiny pockets of horses survived the die-off of megafauna that occurred, but this cannot be confirmed at this point and time.
There is another theory ( again, this is debatable) That horses were re-introduced some 500 years before the Spanish, by vikings that landed in what is now Canada.
The conquistadors brought horses to Latin America in 1521.
The spanish introduced horses to north America
The Spanish introduced horses to North America.
"Aboriginal Americans," which were not technically native from North America, did not use domestic horses until the idea was introduced by European explorers.
The Spanish re-introduced horses to North, Central and South America, where the prehistoric horse population had become extinct many thousands of years earlier.
Yes, there is plentiful horses in North America.
The Horse. Before the arrival of European colonists, there were no horses in the Americas.
The original horses in America were believed to have become extinct here many years ago. It is believed then, that it was the Spanish conquistadores who brought their horses with them in the 1500's via Mexico that restarted the North American horse population.
Horses were introduced to America by Europeans
We have horses in North America now.
Horses
Yes they did.Many historians believe that most of the development of horses began in North America. Scientists believe that the first horses (called Pliohippus) to evolve in North America appeared about 6 million years ago. For some unknown reason, horses (Equus) disappeared from the western hemisphere and were re-introduced by spanish explorers (after Columbus) in the sixteenth century.