Since the first human civilizations appeared 10,000 years ago, people have fought over land and resources. Over time, these conflicts led to the development of many technologies that would improve human life or end it. Ancient Persians bred larger, stronger horses to ride on in war and help pull carts. In China, ancient warriors developed martial arts and engineers built one of the biggest military building projects in history, the Great Wall. Ancient Americans created improved spear throwers used by hunters and warriors. The ancient Romans and Greeks built speedy ships based off the ships of the ancient Phoenician navy. From the first spear throwers to the dreaded Claws of Archimedes, discover the ancient technologies that changed the course of human history.