Basically grass, hay, and grains.
Horses eat grass, hay, apples, carrots, chay, and oats typically.
A niche in an horses inviroment is to provide a source of food for predators and to turn up the soil with there hoofs.
the horses food is brought to them. . .
Yes. Horses are shipped from Canada to Japan where they are raised and processed for food. A horse steak may cost as much as $300 in Japan. The US passed a law that prohibits the killing of horses for processing. This caused the price of horses to drop and many horses have been turned loose to starve. If they are sold for food, they are shipped to Canada where it is legal to butcher them.
They captured and tamed wild horses.
Horses eat grass, they graze.
Horses are herbavores. They eat grass, hay and other plants. They got their food from around them.
Horses were highly important as modes of transport in areas where wheeled vehicles could not reach, they could also haul artillery, water, food, etc. In times of need the horses could also serve as a source of food, though this was usually a last resort.
Stuffed animal horses, plastic toy horses, horse statues and stuffed dead horses. All other horses that are alive and breathing definitely need water and food.
food!
Sea horses eat their food through their snout. Sea horses eat continuously as they do not have completely functional digestive systems.
The same way other horses get food: by using their noses to find it and their mouths to eat it.