Mustangs live in North America. They are said to come originally from Iberia.
There is a bit of dispute on what to call them. Those who call them feral say that these horses were once domesticated, so they aren’t wild. Others call them wild horses, because they are running around free.
The US Bureau of Land Management has Mustang adoption programs. People who are able to adopt and qualify to do so, can go and get a Mustang.
Wild horses also live in other countries.
I have used pictures from the US.
These three pictures were taken by the Bureau of Land Management.
By, T353&4. Taken in Pamlico in the state of North Carolina.