They were hindered by economic development and lack of enforcement, so I'd say 1. Cost, because no one would pay for it.
<span> standardized weights and measures, seal carving, and metallurgy with copper, bronze, lead, and tin.the Indus script, and as a result. Indus River Valley Civilization’s institutions and systems of governance.</span>
Answer: A. document
Explanation: It's Correct I promise
