This story begins more than 5,500 years ago on the windswept grasslands of the Eurasian Steppe; when one human tamed one horse, an unbreakable bond was forged and the future of humanity was instantly rewritten, placing the reins of destiny firmly in human hands. Since that pivotal day, the horse has carried the history of civilizations on its powerful back. For millennia it was the primary mode of transportation, an essential farming machine, a steadfast companion, and a formidable weapon of war. Horses revolutionized the way we hunted, traded, traveled, farmed, fought, worshipped, and interacted. They fundamentally reshaped the human genome and the world's linguistic map. From the thundering cavalry charges of Alexander the Great to the streets of New York during the Great Manure Crisis of 1894 and beyond, horses have shaped both the grand arc of history and our everyday lives.