Indus River Valley Civilization 2500-1500 BCE Geography Indiais dominated by its weather that is shaped by monsoons. Monsoons are seasonal winds that bring in great amounts of rain in June- September and dry, very hot weather in October- May. Unpredictable floods were common from the Indus River and the Ganges River, and this geography made it difficult to live there. Thelargest cities were Mohenjo-Daro and Harappa. There were several natural barriers, such as: Himalaya Mts. Thar Desert Greatlinks to the sea and mountain passes allowed extensive trade. Accomplishments Hadthe first indoor plumbing and developed planned cities. Roads were laid out on a grid system at 90o angles. This sophistication and planning indicates a strong central government. Merchants identified their goods with stamps and seals. Why don’t we know more about this civilization? Historians have not yet deciphered their system of writing. Developed the caste system - a social class system that divided labor and was supported by the belief of reincarnation. reincarnation- the process by which a soul is reborn again and again until it achieves perfect understanding.
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