Question

Which of these would probably tell us the most about a past civilization's history, religion, and political institutions?

Answer 1

actually all of them would be because it shows back in there history and there religion would also help because you could ask have they been that religion there entire life or why are they that religion and what are they in political institute alot of stuff you could use

Answer 2

Tools probably as they show more of the history. They're primary resources.
Architecture may show more religion and political institutions though.