How about the sacking of Rome? I would say that it is rare because one preindustrial civilization would not have too much of an extra advantage over the other, whereas an industrialized and advanced civilization could have a clear advantage, especially when it comes to weapons.
earthquakes and civil war
Nope
they wanted to move to another countrycell phones
slavery
One significant factor that could lead to the fall of a civilization is environmental degradation, such as deforestation, soil erosion, or water scarcity. These issues can disrupt agriculture, leading to food shortages and economic decline. Additionally, social unrest and political instability often arise as resources become scarce, further weakening the civilization's ability to sustain itself. Ultimately, a combination of environmental, economic, and social pressures can create a cycle that leads to collapse.
One significant factor that contributed to the collapse of the Mycenaean civilization was widespread socio-political instability, which was likely exacerbated by invasions from external groups, such as the Sea Peoples. Additionally, a series of natural disasters, including earthquakes and droughts, may have disrupted agricultural production and trade networks, leading to economic decline. These pressures resulted in the eventual breakdown of centralized authority and the fragmentation of the Mycenaean city-states.
The Mycenaean civilization declined around the 12th century BCE, primarily due to a combination of factors rather than a single conqueror. Invasions by the Sea Peoples, internal strife, and economic troubles contributed to their downfall. The Dorian invasions, which followed the collapse of the Mycenaeans, are often cited as a significant factor that led to their defeat and the subsequent Greek Dark Ages.
The collapse of dictatorships in Latin America
dominant factor
The common factor was environmental degradation, specifically deforestation leading to soil erosion and loss of resources. Hypotheses suggest that the collapse of Easter Island society was primarily due to the overexploitation of natural resources, resulting in a decline in food production, social unrest, and ultimately societal collapse.
Factors come in pairs. If you know one factor, divide it into the number. The answer will be another factor.
No, that's just a factor. A common factor is when that factor is also a factor of another number.