What causes the villagers are no longer-sufficient food production declines and famine sets in?

The decline in food production among villagers can be attributed to several factors, including environmental changes such as droughts or floods, which disrupt agricultural practices. Additionally, poor farming techniques, lack of access to modern tools, and soil degradation can further diminish crop yields. Economic challenges, such as market instability and lack of investment in infrastructure, can exacerbate these issues, leading to widespread famine as food becomes scarce and unaffordable. Lastly, social factors like conflict or displacement can prevent communities from effectively cultivating and accessing food resources.