Because the Conquistadors brought the first modern horses to America. The horses that were native to the Americas were extinct by the time Europeans got here.
I am not certain but I believe it is around 9,456,987.
Two significant positive contributions Europeans brought to the New World were the wheel and horses. Europeans also brought diseases that the Natives in the New World have never been exposed to. The results were the deaths of many Native Americans
The Iroquois got horses after the Spanish brought them over to America in the 1600s. There were no horses in America before the Spanish introduced them to the Indians.
With the understanding that Mexico is in North America, Native Americans did not have the diseases that Europeans brought to the New World. Also, horses and the wheel were not in the Native American empires and Tribes.
The Spanish brought most of the horses to America.
Horses were brought over by the Europeans to the Americas. The Europeans brought over their horses, which some had been trained to race (mostly Arabians). They created the breed that we call today, the Thoroughbred, by mixing Arabians with other pure breeds.
Horses were first reintroduced to the Americas by the Spanish Explorers. Once there some of the horses escaped, were stolen or released and formed the feral Mustang herds that are now a symbol of the old west era.
The conquistadors brought horses to Latin America in 1521.
They brought cloth and horses to trade with the Africans.
Horses
Columbus brought horses on his second trip to No. America in 1493.
Horses were introduced to America by Europeans