History of the World

Once civilizations appear, Roberts faces the problem that defeats most world histories: how to handle many places at once without turning the book into a parade of dynasties. His solution is to keep asking why — why civilization took root along certain rivers, why some societies generated writing and monumental building while others, no less intelligent, did not. His answers lean heavily on geography and contingency rather than on any ranking of peoples. Great rivers, workable crops, defensible ground, and above all contact between groups did more than any inborn quality.

He gives the early river civilizations their due — Sumer, Egypt, the Indus valley, the Yellow River — but resists treating them as a starting line for a race that the West would win. China, he stresses, sustained a continuous, sophisticated civilization for far longer than Europe managed anything comparable, and for most of history was richer and more technically advanced. India produced religious and philosophical systems of extraordinary depth. The Islamic world, at its height, held the intellectual center of the planet. Roberts wants the reader to feel how provincial and late the European achievement looks from this vantage.

For most of Roberts' book, Europe is a backwater — cold, fragmented, and peripheral to the real centers of wealth and learning in Asia. What interests him is how this margin became, for a few centuries, the maker of a single interconnected world. He refuses the flattering explanations. Europeans were not smarter or more virtuous; they were, he argues, driven partly by their own poverty and disunity to look outward, and lucky in the timing of a cluster of changes that reinforced one another.

The changes are familiar but Roberts insists on their linkage: the printing press spreading ideas beyond any authority's control, gunpowder reworking the balance between kings and nobles, ocean-going ships built to reach spices and gold, and a competitive tangle of rival states that could never quite suppress dissent the way a single empire might. No European monarch could shut down the whole system. That very fragmentation, which had kept Europe weak, now kept it restless and experimental. Ideas that a unified power might have crushed survived because there was always another court, another city, another printer.

Step back and the wager underneath the whole book comes into view. Roberts is betting that all of this — the flint tools, the river kings, the Mughals and the Ming, the caravels and the factories — can be told as one story rather than many. That is not a neutral choice. A world history could just as easily be written as a set of separate civilizations, each with its own logic, meeting only occasionally. Roberts rejects that. He sees a single process, gathering pace, in which the human ability to store knowledge and pass it on keeps compounding until the recent past detonates into the modern world.

The strength of this framing is that it makes sense of the acceleration he keeps pointing to. If humanity is one connected system, then improvements anywhere eventually feed everywhere, and the whole thing speeds up. It explains why the gap between the printing press and the printed internet is so much shorter than the gap between the hand-axe and the plough. Knowledge accumulates; contact spreads it; the curve steepens. By the time Roberts reaches the twentieth century, change has become the permanent condition rather than the exception.

Roberts opened in the silence of prehistory, among tool-makers who left no words, and he ends with human beings looking down on the whole planet from orbit. The distance between those two images is the book's real subject. He wanted to show that they belong to a single story — that the hand shaping flint and the hand guiding a spacecraft are the same species, separated by an accumulation of knowledge so long and so steep that the last stretch feels like a leap.