Top 10 most dangerous civilizations in world history

New Delhi: Man was living the life of an animal before civilizations sprang up. Civilizations made human beings organized, social and raised their standard of living.While some civilizations were very progressive and peaceful like Indus Valley civilization, Aegean civilizations etc, there were other civilizations which were terrifying and aggressive like:1. The Aztecs Inhabitants of central Mexico, this civilization survived from 14th-16th century. They had a bizarre belief that after every 52 years, the world would end unless the Gods are strong enough.So, human sacrifice was the only remedy to revive the power of God according to them. They even became cannibals to save the world.About 20,000 people were killed yearly towards keeping their Sun god happy.They would even toss the bodies of the dead in fire, kill the children and make them cry thinking that tears of children would induce rain.2. The Celts The Celtic civilization lived in Britain, Isle of Man.They were known for putting victim's heads on their chariots and in front of their homes.They were called head hunters.They cut off the heads of enemies slain in battle and attach them to the necks of their horses.This has been written in various history books.3. Soviet Union The Stalin era led to the deaths of 10-60 million people.Soviet war causalities have been the highest ever. Mass killing in under the regime of dictators like Mao Zedong, Khmer Rouge has been eras of mismanagement, destruction and political and social instability.4. The Mongols The empire existed in 13th and 14th centuries.The most famous leader of the empire was Genghis Khan.He was known for his barbaric and cruel behaviour. The empire was spread over Asia and Europe and was one of the most disciplined empires of the world.They used to ride on horses and were expert in warfare, thus were capable to capture almost entire world.During an invasion of India, they built a pyramid in front of the walls of Delhi out of human heads.5. Nazi Germany The ‘Third Reich' under the military rule of Adolf Hitler was one of the most barbaric and inhuman rule. Hitler had ordered much genocide thus almost eliminating the Jews population in Germany.Atleast 4 million people were killed in the Holocaust. The Nazi concentration camps were like an industry for mass murder of people (undesirable like Jews, Romani, homosexuals as considered by Hitler)6. Roman EmpireIt occupied most of the Western Europe.The main countries conquered were England/Wales (then known as Britannia), Spain (Hispania), France (Gaul or Gallia), Greece (Achaea), the Middle East (Judea) and the North African coastal region.Criminals, slaves and others were forced to fight each other to the death in gladiatorial games. Some of the most evil men were Roman – Caligula, Nero and others. Christians were first, and horribly, targeted for persecution as a group, by the emperor Nero, in 64 AD.Some were torn apart by dogs, others burnt alive as human torches. At first they were ruled by divine kings, then they became a republic (perhaps their greatest period) before finally becoming an empire.7. Apache Tribes They lived in America and were popular for their great combating skills. They were also the greatest knife fighters the world has ever seen, and were pretty good with the tomahawk and throwing ax.They were great hit and run fighters, and their descendants teach modern day special forces how to fight in hand to hand combat. Therefore, they were also called Ninjas of Americas.8. The Viking They inhabited the regions of Germany from late 8th-9th mid century. They had excellent warrior skills. Their physical strength was ferocious and valor.The purpose of their life was fight till death.9. The Maoris They are the indigenous Polynesian people of New Zealand. They were cannibals and believed eating enemies' flesh made them stronger by acquiring their strength and combat skills. 10. The Spartans The civilization of Germany, every single man was a soldier. They fought until they could finally retire at the age of 60. These were one of the most feared military forces in world history.