Question

What problem resulted from the weakness of not being able to regulate
interstate trade?

Answer 1

If I had to guess it would be the inability to regulate taxes on goods traveling between and being sold in different states

Step-by-step explanation:

Answer 2

Without the ability to regulate interstate trade, the States became rather divided as they competed against one another for trade advantages.

Hopefully this helps you out, and I'm sorry if this is not the answer you're looking for.