both Gibbon and Diamond were considering how a single empire or a single civilization came to an end—the Romans, the Maya, the Mongols, and so forth. Here, we are considering a globalized system in antiquity, with multiple civilizations all interacting and at least partially dependent upon each other. There are only a few instances in history of such globalized world systems; the one in place during the Late Bronze Age and the one in place today are two of the most obvious examples, and the parallels—comparisons might be a better word—between them are sometimes intriguing.
