It takes genuine courage to attempt a synoptic history of India and considerable skill to abridge the story of more than five thousand years into a book of fewer than three hundred pages. For a start, the evidence we have for what occurred during the first forty centuries is scarce and uneven. Archaeologists have unearthed planned towns, figurines, seals, pots, and tools that attest to the existence of a sprawling and successful society flourishing in the Indus Valley from around 3300 BCE until 1300 BCE. But as John Zubrzycki explains in this clever book, we know little if anything about how this Harappan civilisation was ruled or organised, partly because its script has not been deciphered and partly because no buildings akin to palaces or temples have yet been found.