The Sumerian civilization gradually declined due to a combination of factors, including environmental changes, such as salinization of soil from irrigation practices, which led to agricultural decline. Additionally, the rise of neighboring powers, such as the Akkadians and later the Babylonians, contributed to their political fragmentation and loss of autonomy. Over time, the Sumerians' cultural and linguistic identity merged with these emerging civilizations, leading to their eventual disappearance as a distinct civilization.
Some theories suggest that Neanderthals interbred with anatomically modern humans, leading to their disappearance through genetic assimilation. Others propose that environmental factors, competition for resources, or even direct conflict with modern humans contributed to their extinction. It is likely that a combination of these factors, rather than a single cause, led to the disappearance of Neanderthals.
The great mystery of the Harappan civilization, also known as the Indus Valley Civilization, lies in the reasons for its sudden decline around 1900 BCE. Despite its advanced urban planning, sophisticated drainage systems, and trade networks, the civilization experienced a rapid collapse with little evidence explaining the cause. Various theories suggest factors such as climate change, shifting river patterns, economic decline, or invasions, but no consensus has been reached. This enigmatic disappearance continues to intrigue historians and archaeologists.
Scholars have proposed several explanations for the disappearance of the Minoans, including natural disasters such as volcanic eruptions and earthquakes that might have devastated their cities and agricultural systems. Some theories suggest that invasions by Mycenaean Greeks contributed to their decline, while others point to internal factors like social upheaval or economic decline. Additionally, climate change could have affected their agricultural productivity, leading to vulnerability and eventual collapse. The combination of these factors likely contributed to the gradual decline of Minoan civilization.
earthquakes and civil war
yes! its responsible for the decline of harappan civilization
Plesiosaurs went extinct around 66 million years ago due to a combination of factors, including environmental changes, competition with other marine reptiles, and possibly the impact of a large asteroid that caused widespread destruction. These factors led to a decline in their population and ultimately their disappearance from the Earth.
laws
nile the river
earthquakes
The three main theories for the disappearance of the people of Mesa Verde are environmental factors such as drought and resource depletion, social or political unrest leading to migration, and cultural or ceremonial practices that may have influenced their departure.
favorable geography