How did the five tribes profit most from mining activities in indian territory?

The answer is challenging and taxing because arduous means when something is hard and tiring and the excerpt provides clear detail why that's the answer

Assemblies do not have written codes of laws. laws are matters for magistrates and courts, not assemblies. codes of law are things such as civil law, criminal law, and constitutional law. what assemblies have are procedures regarding debating, voting and other business they might carry out.  also note that rome had three assemblies: the assembly of the soldiers, the assembly of the tribes, and the plebeian councils.