What fator indicates decline in a civilization?

A decline would be indicated when the civilization loses its power. Further indications would be a loss of culture, education, and peacefulness.

like when no one lives in the houses in the community

That would be one sign.

A decline in a civilization can be indicated by several factors. These factors vary depending on the specific civilization and its context, but there are some recurring patterns. Here are a few common indicators:

1. Political instability: Look for signs of political turmoil, such as frequent change in leadership, weak or corrupt governance, or internal conflicts. This instability often weakens a civilization's ability to make effective decisions and implement long-term plans.

2. Economic decline: A struggling economy can be a critical factor in the decline of a civilization. Signs of economic decline may include decreasing trade, rising unemployment, shrinking infrastructure, or inflation. Economic instability often leads to decreased investment in areas like education, technology, and public services, which can further exacerbate the decline.

3. Social unrest: Observe the presence of social tension, widespread dissatisfaction, or increasing inequality within a civilization. Social unrest can be caused by factors such as a lack of social mobility, discrimination, inadequate access to resources, or cultural clashes. This unrest can weaken social cohesion and destabilize the foundations of a civilization.

4. Environmental degradation: Pay attention to signs of environmental decline, such as depletion of natural resources, deforestation, pollution, or climate change. Environmental degradation can have severe consequences for a civilization's ability to sustain itself over time, impacting agriculture, water supply, and overall quality of life.

5. Cultural stagnation: A decline in a civilization's cultural achievements, including art, science, literature, or philosophy, can signify a decline. Cultural stagnation may be due to a loss of intellectual curiosity, lack of innovation, or constraints imposed by political or social factors.

To determine the specific factors contributing to the decline of a civilization, historians and scholars typically rely on a combination of historical records and analysis, as well as the examination of primary sources, archaeological evidence, and comparative studies with other civilizations.