For thousands of years, people farmed the land. They grew fruits and vegetables. They hunted and fished for their meat. They made cloth, dyes, and paper from plants. They used stone and metal for weapons and tools.
People progressed to making machines powered by water and steam, and even later, by coal, oil, and gasoline. Large cities were built. Factories full of machines created jobs in the cities for thousands of people. The Industrial Revolution changed the lives of many people because, for the first time, more people lived in cities than on farms.