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The rest of this chapter will trace many important preindustrial developments which helped set the stage for the Industrial Revolution, which is humanity’s fourth and most recent Epochal Event. But until the last few centuries in Europe preceding the Industrial Revolution, the basics among all civilizations did not appreciably change. Agriculture provided a local and stable energy supply that allowed for sedentism, forests were removed to make way for crops, and domestic animals were used to provide labor and/or flesh products, while their manure helped replenish soil nutrients depleted by agriculture. Virtually everywhere that agriculture appeared, so did civilization, with varying levels of urbanity. Elites dominated all civilizations, and they almost always invoked either a divine nature or divine sanction to justify their status, and they always engaged in conspicuous economic consumption. Cities situated on low-energy transportation lanes, which were almost always bodies of water, exploited forested and agricultural hinterlands, which were worked by peasants and slaves, while cities housed professionals and the elite. Forests and agriculture provided the primary energy supply of all preindustrial civilizations, which was usually supplemented with the products and services of domestic animals. All preindustrial civilizations were steeply hierarchical - economically, socially, and politically – and the means of production provided small surpluses that supported a small elite and professional class. Fighting over resources and plunder has been the primary predilection of all civilizations for all time, except for a very brief interlude at the beginnings of .

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The derision was loud from Wrangham’s colleagues…until evidence of was found at in South Africa by using new tools and techniques. The chortling is subsiding somewhat and scientists are now looking for the faint evidence, and long-disputed evidence of 1.5-1.7 mya controlled fires is being reconsidered, although his hypothesis is still widely considered as being only "mildly compelling" at best. New tools may push back the control of fire to a time that matches Wrangham’s audacious hypothesis. Wrangham cited the Expensive-Tissue Hypothesis as partially supporting the Cooking Hypothesis, but , the energy to power the human brain may not have solely derived from cooked food’s energy benefits. Wrangham has cited numerous lines of evidence, one of which is a that has to find honeybee hives and smoke them out; the humans get the honey and the honeyguide gets the larvae and wax. According to recent molecular evidence, the evolutionary split of the honeyguide from its ancestors happened up to three mya, which supports the early-control-of-fire hypothesis. There is great controversy regarding these subjects, from recent findings that to scientists making arguments that to the social impacts of campfires. This section of this essay will probably be one of the first to be revised in future versions, as new evidence is adduced and new hypotheses are proposed.

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Because the Western Hemisphere’s inhabitants were virtually all in their Stone Age, they as greatly as Old World civilizations did, and many societies were environmentally sustainable and provided seeming answers to questions that scientists have asked about Old World civilizations’ development. The natives of coastal California were familiar with agriculture, as it was practiced by nearby inland tribes, but they never adopted it. California was so bountiful, and its climate was so human-friendly, that its natives retained their hunter-gatherer lifestyle. Similarly, northward on the Pacific Northwest's coast, natives created an economy in which half of its calories derived from salmon runs, and those peoples were relatively sedentary without agriculture. Natives turned the Great Plains into a big pasture for bison, and the biome was partly maintained by annual burning of the grasslands. In Mesoamerica, farming has been sustainable for thousands of years. In the Amazon, the natives transformed the rainforest, and a higher proportion of plants and trees provided human-digestible foods than in any other “wild” place on Earth, those natives also terraformed thin tropical soils with ceramics (maybe unintentional) and charcoals (intentional) and made super-soils called and . In summary, native practices in the Western Hemisphere were often sustainable if not quite abundant. But when civilizations arose, they had problems that were like their Old World counterparts'. Their problems were also environmental and not just the injustices of hierarchal societies, often steeply hierarchical.