How can one explain in what the beginning of the disintegration of the feudal-serf system manifested itself?

How can one explain in what the beginning of the disintegration of the feudal-serf system manifested itself? The successes in the development of agriculture and manufactory production? what new features appeared in trade in the second half of the 18th century?

Since the beginning of the late Middle Ages, as a result of scientific, technical and cultural advances, there has been an increase in the productivity of hired labor, the demand for goods and services has increased sharply. Over time, commodity-money relations begin to change the feudal subsistence economy and supplant unprofitable serf labor. The increase in agricultural productivity facilitated the migration of surplus labor from villages to cities, which in turn influenced the development of manufacturing and skilled labor. By the mid-18th century, the complexity and diversity of trade relations gave rise to a system of laws and regulations governing trade, which reduced the risk of financial loss for producers, intermediaries and end consumers.