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The presence of plumbing systems suggests that the Indus Valley cities:

1.had strong central governments to plan.
2.produced enough surplus to allow for differentiation in jobs.
3.valued cleanliness.
4.All of the choices are correct.

User Arttronics
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1 Answer

4 votes

Answer:

All the

Step-by-step explanation:

choices are correct

User Rahul Soshte
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