Way without a trace. Mass disappearance is a very real and bizarre thing in which a large number of people disappear suddenly and for no apparent reason without a trace. Sometimes a plane full of passengers flies into the night to never be seen again, or a ghost ship emerges floating in the water without any sign of crew. However, even these deterrent cases are a small time compared to the disappearance of a whole society.
Whole civilizations, cities and empires have faded, and today's archaeologists and researchers often try to trace back their inhabitants' steps and reconstruct what exactly happened to see if we can find a cause and, more importantly, find a way to prevent this from happening to our cultures today. Interestingly, several of the cultures on this list were several hundred thousand people strong before they seemed to disappear without a trace. Here are ten civilizations that have mysteriously disappeared.
Semites are people belonging to a particular ancient language group, which includes Arabs, Akaadians, Hebrews, and more, and one of these groups was the Nabatean culture, which existed for at least 312. As they were attacked by the Macedonians.  This ancient and seemingly forgotten kingdom spanned the territories of Syria, Arabia and Palestine at some point in time and became quite massive. Nabatean writing has developed over the centuries into modern Arabic, and only recently did we understand its evolution.
They established extensive trade routes and trade and became an extremely technologically advanced civilization for the day, with huge water systems that helped them survive the arid climate of Arabia. They left behind massive structures that, like other cultures, were in ancient heavenly bodies, a testament to an engineering genius among these people. Towards the end of their history they were strong allies with the mighty Roman Empire, although Emperor Trajan annexed the kingdom from 105 to 106 AD. After this era, we really do not hear much about the Nabataeans.
Anyone who has ever been to the deserts of New Mexico may wonder how or why a civilization would live there before the advent of air conditioning. But this area was not only a vast country within America, but also the area of one of the oldest American civilizations, the Clovis, named after the present city of Clovis, New Mexico.
Here a rare and important archaeological discovery was made, namely many sharp objects and weapons, obsidian, bone tools and hammers, which for their time from 9050 to 8800 BC. Highly esteemed, based on estimates of the 21st century. The same tools and constructions were found in a good piece of North America, which means that this group was particularly widespread. Nevertheless, they eventually disappeared completely.
It was believed that their massive size, like Rome, forced them to branch into smaller groups that evolved into different peoples in different places and were the forerunners of many other Native American cultures. This thought is supported by the fact that genetic links to the Clovis were found even in the remnants of the ancient South Americans.  Others have speculated that they relied heavily on the hunt for the mammoth that died out, or even on the southwest. A part of the United States was hit by a comet that obliterated it.
The inhabitants of Catalhoyuk were a very old Neolithic civilization, which, as far as we can judge, also disappeared in the air. They lived in today's Turkey from 7500 to 5700 BC. In clay brick houses, which were no different from other extremely early civilizations. This particular group was extremely artistic with their religion, painted massive murals, and built great shrines of devotion that today amaze art lovers. They lived extensively on grain and other crops to feed themselves.
Researchers discover new facts about this group every day. We may soon know exactly what happened to them, but from now on, all we have left are the empty shells of the wonderful buildings and unique houses that seem to be deserted. Much of the mystery of their disappearance is simply that they are lost for the time being. All we have to do is the physical evidence itself, with no literary evidence. Excavations have just come across skeletons under the floor of a building, suggesting that they may have used it for religious purposes, but for the moment we do not really know. 
7 Rapa Nui  The most famous of the disappearing cultures. The Rapa Nui were the original inhabitants of Easter Island and left behind the famous statues that we've probably all seen. The Polynesian people have inhabited the island, which now belongs to Chile, even though it is 3,500 kilometers from the country. Due to the absolute seclusion, the creation of the original Rapa Nui is as much a mystery as the reason why they have disappeared.
Why did they disappear? The cause of overuse of resources is hunger. The destruction of the ecosystem of Easter Island by rats was also taken as the culprit. It is also believed that the Rapa Nui traveled to another remote island thousands of miles away to found a new settlement. (Offspring of Easter Island's Rapa Nui live in Chile today.) The truth could be a combination of the many suggested explanations. 
The Minoans came from the Greek island of Crete. An ancient Bronze Age civilization dating back to 3000 to 1000 BC. BC existed long before the golden age of Athens and Alexander the Great. The Minoans were evidently a Greek civilization and the forerunners of ancient Greece, most famous in our history books today, and they were also a pagan culture, practicing animal sacrifices, burning offerings, many nuanced cults and wild, unselfish festivals hosted by song and dance.
The ancient Egyptians refer to them as hieroglyphs, which means that the Minoans definitely roamed the ancient world and had high-end technologies and impressive arts for the day – but then they declined and disappeared. 19659021] Theories suggest that they were decimated by a volcanic eruption on the Santorini islands near Crete, which must have devastated the shores of Crete with waves, ashes, rainstones and more. The famous Greek historian Herodotus writes that he has been overthrown by plagues and diseases, but there is simply no way to say how Herodotus wrote many centuries after the disappearance of the peoples of this island.
5 Cucuteni-Trypillian Culture
Between about 5400 and 2700 BC. Lived as a Cucuteni-Trypillian culture known society in the areas of today's Moldova, Romania and Ukraine in the Carpathians. Strangely enough, this group disappeared from the face of the earth. They were an early civilization that relied heavily on agriculture and proximity to water supply, housing construction and settlement as people of that time. They had a very deep religion and mastered many arts, including sculpture, pottery, and more.
Before their peculiar disappearance under unusual circumstances, this formidable culture spanned an impressive 350,000 square kilometers (135,000 miles 2 ) and exercised a rather bizarre lifestyle even then. The social order was such that people settled in densely populated settlements that would burn them down or otherwise completely abandon and rebuild them every 60 to 80 years.  Some have theorized that they would honor their dead in this way. Type of burial by mass crematoria.
The Anasazi culture of the North American Southwest has left many structures and artefacts that we have been able to find before they disappear. Maybe it was the brutal climate of the southwestern heartland or the change in this climate that made the conditions uninhabitable, namely access to water, but this is a group of people who have also disappeared.  19659002] Massive structures that were built into the cliffs were left completely and were found in relatively untouched condition. These residential structures were ideal for warding off intruders, as they were often multi-story and had windows for the entrance via ladders. If the war broke out, the Anasazi would be able to climb into their structures, pull up the ladders, and post several stories about the invading tribes and shoot at their enemies with impunity.
Many Native American tribes and some scholars claim that the Anasazi have never really disappeared; They were just reaching the critical mass of magnitude society can reach before it inevitably breaks up into smaller factions and becomes new groups of people, much like in ancient Rome. They believe that today some surviving tribes are direct descendants of the Anasazi people.
3 Nabta Playa
The ancient inhabitants of Nabta Playa in the southern part of present-day Egypt were a Neolithic group. The area existed about 11,000 to 6,000 years ago and was largely nomadic as was customary at the time. The climate in the Nabta Playa basin was marked by feasting or famine, where seasonal shifts in some places during the year resulted in a plethora of water and others in a complete drought. Finally, the people settled down and inhabited the area as civilization.
Due to climate change, the area at this point is almost completely dry sand, which has retained what people left behind before they disappeared, such as a stone circle. The stone circle roughly matches the stars in many ways and became a sanctuary for the gods, with animal remains found in huge underground caverns.  Like those who built Stonehenge, the people who lived there finally refused to completely disappear.
2 Khmer Empire
The Khmer Empire is one of the more recent disappearances that has been in history for a long time. The empire existed from 802 to 1431 AD in Southeast Asia and encompassed the present-day countries of Thailand, Cambodia, Laos and Vietnam. It was a mixed culture of Buddhists and Hindus, created by centuries of warfare. The Khmer Empire today built some of the most amazing temples and monuments in Southeast Asia, many of which are in near-perfect condition.
But like the others on this list, the Khmer Empire went back and disappeared. Some have noticed that the mass migration of the Thai people may have slowly overtaken the Khmer, much like the Germanic tribes, who in the course of time slowly invade the western half of the Roman Empire. Others have been accused of perpetual warfare with which the Khmer daily lived, but they have never been completely overhauled. Others have pointed to possible changes in weather conditions that have changed their access to rainwater and led to mass migration. The theories talk about the reasons why they fell, but nobody knows for sure. 
The Olmecs were the first great Mesoamerican civilization and their culture was as rich as bizarre and unusual. They left us many standing structures and statues that exist today, and their fame lasted from 1200 to 400 BCE. At a society based on sacred religious practices for which they erected pyramid-like temples. Similar to the Polynesians on Easter Island, they also carved massive stone heads, some of which were up to 3 meters high and weighing 8 tons. 
So much of this culture What was lived a long time ago has been lost to time, and we do not even know what they call themselves or much about their language. "Olmec" is a term that the Aztecs had for them centuries after their disappearance, which is roughly translated to "rubber people". Even more interesting is the fact that not a single trace of someone is left, not even the bones. But we have the artifacts.
They disappeared around 400 BC From the world stage. Some have suggested that the incredibly wet Mesoamerican climate would eat away the bones. But as for the people, the language and the culture outside of their art and artifacts, we know next to nothing, especially not why they disappeared.