Horses continue to fascinate men, who use the animals as pets and as sources of beauty, sport, strength and income.
The Industrial Revolution and the invention of steam power changes the horse's role in industry and agriculture.
Christopher Columbus returns the horse, much-changed through evolution from its tiny forebear, to North America.
Historians examine the two-thousand-year partnership between horse and horseman in the world's civilized empires.
The partnership of man and horse determines the fate of early civilization by its effects upon battles, exploration and travel.
The horse evolves, from a dog-sized creature in the Americas, to a larger creature later domesticated by man.