Hackneys are a favorite Cart Breed
Standard Bred is a good cart Breed
There are around 180 breeds to 200 breeds of horses
There are hundreds of breeds of horses.
yes, over 250 breeds of horses roam the earth.
Clydesdale, Arabian, and appaloosas are all breeds of horses.
There is a paint breed...but the pattern is found in other breeds such as TB's and QH's
There is over 100 breeds of horses throughout the world.
Horse breeds that were used by Romans were largely named by their type and not their breed. Chargers or Coursers for battle, Palfrey's for riding, and then there were cart and pack horses. There were references to other types and possibly breeds, but it is unknown whether they were referring to a single breed or a collective group of breeds. However it is known that Tukomans were in high demand and the modern form of the breed is the Akhal -Teke.
There are 267 equine breeds.
"Main breeds" really depends on where you live. Main breeds of horses in the USA and Canada, for example, are thoroughbreds, arabians, quarter-horses, morgans, clydesdales, etc.
Quarter Horses Throughbreds Paint Horses
Shire horses are certainly heavy horses.
Ether you buy them or breed your horses.