Question

Many researchers now believe that the collapse of the Indus civilization cities was caused by:
a) a combination of environmental and social factors destabilized the traditional Indus Civilization authority structures
b) an invasion of Indo-Aryan or Indo-European speakers who laid waste to the whole region
c) flash flooding that forced people out of the cities and into other regions
d) the Chinese to the north who forced the Indus civilization to integrate into their empire
e) the introduction of Hinduism, which naturally inspired a different way of life

Answer

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