The human race has existed on the planet for several millennia. We managed to form a powerful civilization capable of reaching the stars and unraveling all the mysteries of life - at least it seems from the outside. It is hard to believe that humanity can disappear without a trace at one moment and everything in nature will return to normal. However, this has already happened.
Mycenae
A powerful civilization that has left a considerable mark on history. Remember the school curriculum: the legend of King Agamemnon, who commanded the Greeks during the Trojan War, often mentions the Mycenaeans. The native country could not provide the inhabitants with everything they needed - they became merchants, moreover, very skillful. How and when the decline of this civilization, confidently standing on its feet, happened, historians still cannot understand. At one point, Mycenae fell into decay, and the locals fled to the surrounding cities.
Tripoli
And this is one of the most ancient civilizations in the world. The Tripoli culture existed for several millennia, from 5500 to 2750 BC. For a long time archaeologists were perplexed by the strange custom of the Tripillya people: every hundred years they burned down their cities and built new ones on the same place. Another fire ended in complete cultural decline - and the reasons for it were never found.
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Khmer empire
The Khmers built their great empire in the 9th century AD. The territory of modern Cambodia has become the cradle of civilization that terrified southern Asia. Brave warriors and unscrupulous warlords, the Khmers quickly seized power in the region. But the long existence of civilization was not destined: an outwardly prosperous people fell, apparently, under the weight of their own vices.
Anasazi civilization
A distinctive culture was the forerunner of the much less advanced Pueblo civilization. The Anasazi people developed their own system for building houses: they were carved right into the rocks. Most likely, the decline of civilization followed a series of aggressive attacks by the surrounding tribes.
Harappan civilization
Along with the ancient Egyptian and Sumerian, the Indian civilization is considered one of the oldest in the history of mankind. It occupied a gigantic territory, stretching over two continents at once. Unfortunately, the Harappan culture also fell into decay: archaeologists find a lot of evidence of how people suddenly fell from their places with entire cities and went into barren lands.
Minoan civilization
Remember the labyrinth in which the mythical (and maybe quite real) minotaur was enclosed? For convenience, archaeologists named the whole culture after the great king of Crete - Minos. The Minoan culture became the first civilization in all of Europe. Historians associate its collapse with a volcanic eruption, however, this theory has its opponents. Indeed, why was the eruption able to take people by surprise, who thoroughly knew the habits of their native mountain? And why did they not escape on numerous ships, although they were reputed to be unsurpassed sailors?
Clovis civilization
Ten thousand years ago, the largest prehistoric civilization inhabited the central plains of North America. The people of the Clovis people were consummate hunters and easily dealt with other, smaller and disorganized tribes. The abrupt disappearance of this powerful culture looks all the more strange. However, some archaeologists associate it with a sudden cold snap.