It is now believed that the largest contributing factor to the decline of the Indus Valley civilization was an outbreak of disease--since there were no treatments and the density of the civilization led the disease to spread very quickly.
True.
We can be misled if we rely on a single means of knowledge.
I’m pretty sure it’s B. An international trade orginaization
Answer:
The mountains impede trade because they are too high and vast to easily transport
