The document summarizes the history of agriculture in three revolutions. The first agricultural revolution began around 10,000 BCE as some hunter-gatherer societies in various parts of the world transitioned to domesticating plants and animals, settling permanently in one area. This led to the establishment of early civilizations. The second agricultural revolution in the late Middle Ages involved innovations like crop rotation and selective breeding that increased food production and allowed commercial farming. The third revolution from the 1940s onward saw the introduction of modern technology including biotechnology, irrigation systems, fertilizers and pesticides, along with large-scale commercial farming and global population growth.