What events in the history of different civilizations can be considered the end of the Middle Ages?

The era of the Middle Ages is a fairly long segment of human history, the beginning of which is the fall of the Roman Empire, and the end of the industrial revolution in England. It includes the following three stages: at the first stage, the process of transition from manual labor to machine labor begins, which in turn significantly speeds up the production process, but these mechanisms are still activated by human muscles. At the second stage, various engines appear (steam, etc.). At the third stage, the mass production of machines grows, and a new branch of industry appears – mechanical engineering.