Military overstretch: The Roman Empire's vast territories and extensive borders required a large and expensive military, which strained the resources of the state.
Decline in agriculture and food production: Soil depletion, deforestation, and the decline of agriculture reduced the productivity of the Roman economy and led to food shortages and famine.
Cultural decay and loss of values: The decline of Roman values such as discipline, patriotism, and civic duty contributed to the loss of social cohesion.
Religious conflicts and persecution: Religious conflicts such as the Arian controversy and the persecution of Christians undermined social harmony and weakened the state.
Overreliance on slave labor: The Roman economy relied heavily on slave labor, which contributed to social unrest and undermined the development of free labor markets.