About 3,000 years ago, from around the Black Sea, came a troublesome trilogy of innovations – horses, chariots and bronze weapons – that gave some people a huge military advantage over others. They did not hesitate to exploit it. Soon, the whole Eurasian world was locked in an arms race. Civilisations rose and fell, and warfare became endemic. Disputes erupted between Eastern and Western peoples (initially Persians and Europeans); a race called the Jews got caught in the middle. Meanwhile, in Greece and Asia Minor, enough people became sufficiently prosperous and secure to experiment with new lifestyles and ideas that would form the foundations of Western culture.