The answer is B the invention of balance made trade easier
It seems that you have missed the given choices for this question. But anyway, the correct answer to the given question above would be TRIALS AND JURIES. Trials and juries are guaranteed by the constitution during criminal cases. Hope this answer helps.
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I just learned that don't do bad things because they might happen to you one day too so be careful of what kind of decision you take! :)
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