The root cause is determined by its economic base. The economic base of feudal countries is self-sufficient natural economy. Agriculture was the decisive production department in ancient times, providing people with the most basic means of subsistence. The situation of agricultural production is directly related to the rise and fall of the country. For this reason, the rulers of past dynasties regarded agriculture as a fundamental event.
Main purposes: to safeguard national unity and ensure fiscal revenue by developing agriculture and collecting taxes from the state.
Impact: The early stage promoted the growth of agriculture and economy, and maintained the unity and stability of the country.
However, serious land annexation and fierce class contradictions in the later period hindered the development of industry and commerce and the germination of capitalism.