How do civilizations spread?
366611
Diplomacy/Influence - a small nation state may be influenced to ally with and then become an integral part of the larger civilization due to the advantages - benefitting from medical advances (etc).
850615
see http://en.wikipedia.org/wiki/Empires\n\nGood Luck!!!
930679
it changed early peoples from being nomadic tribes to civilized cultures, they then developed irrigation and became societies, then went on to become empires. \n\nif you don't have to follow your food year-round then you have more time to aspire.
1108603
They think it began in Africa among animals and spread to the humans who ate those animals.  It is spread through bodily fluids--blood transfusions, sexual intercourse and intravenous drug use are the most common ways it is spread.
624082
Probably not.\n\nI do not know if "civilization" is even the correct word, but "organization of sentient life forms."  Humanity is a very crude, semi-intelligent, partly uneducated, biased and bigoted species.  Oh, I forgot perhaps technically backward and almost spiritually bankrupt.\n\nI am not a pessimist.  This is why I am willing to believe that there may be other "organization of sentient life forms" out there.  The universe is very, very large.\n\nAs for my evaluation of humanity, I am a realist.  I actually believed humanity was in better shape until I started participating in Yahoo! Answers.
938998
Well there are lost worlds and lost civilizations. \nOur civilization now will extinct someday too, not to mention possibilities of meteors attacking earth.\nSomeday another person will ask the same question and get the same answer.
427482
1 word: gravity.\n\nMatter is attracted to other nearby matter, so when a planet forms, nearby matter and space dust tends to congregate closer and closer until they form a ball in space which becomes a planet.  Gravity is the force that makes this happen.
1167531
There is very little cultural information about the Indus valley Civ. There is some evidence left that they traded with the Sumerians, etc. but there is really no documentation left from their civ, so the general consensus is that they communicated in a clay/cuneiform fashion.
457482
Beliefs and practices affect every aspect of civilization.  They help to develop government, individualize religion, form habits, culture, architecture.  Beliefs and practices are probably the most fundamental aspects of any civilization.
910470
There is an "end of the world" myth in every civilization, most involve the gods coming down and remaking the world as well. \n\nMany civilizations have a flood myth, lots have some tell of giants, unicorns, trolls and the such. That doesn't mean they're bound to happen, only that all the people of the world wondered about these things.
1174955
In outer space there are some gasses but not enough in any one place to provide a medium for a sound wave to propagate through. Asteroids and meteors are silent until they enter an atmosphere.
1141484
sanjana,\n                diffusion is natural mixing of particle .if u have reddish brown bromine gas in test tube with another test tube above the gas u will find that the red colouration of bromine gas will soon spread to the test tube on the top.in same way if liquid ink is left in bottom of teat tube full of water it will spread evenly throughout the water.a solid crystal of pottasium manganate if left in water will also naturally spread throughout by diffusion,but its colour spread more slower than gases or liquids.diffusion can only take place if matter is made of particles.if matter had been coninuous there would not have been enough space for liquid and solid to mix together.\ndiffusion take place much more quicker w gases than w liquids or solids.evidence for this is way smells travel.gases r generally lighter than liquids and solids therfore their particles move more quickly.in fact rate of diffusion is inversly related to mass of particle.therefore a dense gas like carbon dioxide with heavy molecules diffuse more slowy than lighter gas hydrogen\ndo u know why i have written\nbecause i am ur neighbour\nfrom pakistan\nif u need my help,plz contact through im or email\nfor web resources\nsearch at google and wikipedia\nali\npakistan
553098
Dispersal of males (and females remain in the mother group) and... not quite sure.\nCheck this: http://www.eva.mpg.de/primat/pdf/MunizCurrentBiol2006.pdf
665454
the only way you can prove it convincingly is by giving a lot of examples from the history.\n\ntalk about the fact that even the most advanced civilizations were destroyed as a result of conflict.\n\nconflict has never proved beneficial for human society.  it has only resulted in misery and suffering.
98437
Civilizations have life cycles just like anything else.  Right now the U.S. is dominant, but who's to say how long that will last?
299717
All the time! It scares the hell out of people. I was given this gift at a very young age. Sometimes its pretty neat to know things ahead of time, and then sometimes its so sad. I doubt that this answer, on any level would cause a paradox, and thrush civilization into a tail spin. It would take a monumental forth coming, to do that.
272372
civilization began when people starts to settle in a permanent place and stop being nomads (the hunter gatherers). being members of a community, citizens help each other when there are natural catastrophes (minor and major), like making a dike in the mesopotamian era to preven flooding. they also help build each others homes or plant crops.