Horses mostly came to the U.S. from Europe
Chestnut is a color and not a breed. Most breeds of horse come in chestnut along with many other colors. So yes Chestnut horses can come from America, but they also come from everywhere else.
Iceland? That's why they're called Icelandic Horses.
from the Spaniards horses mating and the horses running away
horses originated from Spain. When the Columbus had come from there.
Quarter Horses are the most popular horses in the United States
I don't think that horses come from anywhere because they come from all around the world. Some come from England, or America, or Shetland. But horses evolved to adapt to the harsh wilderness.
Yes, quarter horses come in any solid colour.
Yes, most horses typically stand by bracing their front feet and then rolling their hindquarters to set their hind feet underneath them.
Most horses live near plains.
They come from Arabia. If that is what you mean.
Horses were brought to Australia as they were the most common means of transportation at that time. They were also valuable for developing the land, helping to clear woodlands, and for hauling heavy loads.