The Indus Valley Civilization
Another early civilization developed. This civilization is referred to by historians as the Harappan Civilization, after one of its major cities. The Harappan Civilization was protected on three sides by vast oceans, and on the fourth side by virtually impassible mountains.
Little is known about this people, it culture, its history, or about their way of life. It is believed that their culture began around 2500 B.C. and continued for until about 1,000 years later in 1,500 B.C.
There are many theories as to what caused the collapse of this civilization. Some believe that it was due to climate change in the region, or due to flooding. Others think that civil war or invasion from outside forces caused the decline.
