By Prof. Debananda S. Ningthoujam, PhD
Why do some civilizations rise and fall, while others persist for long periods? The Vikings settled in Greenland in 984 AD, where they maintained a Norwegian pastoral economy, domesticating sheep, goats, cattle f……
Read more / Original news source: http://www.ifp.co.in/page/items/60552/why-do-some-civilizations-rise-and-fall