So, if we considered that the previous law books were also these historical ones, it would turn out that the previous books also contained the glorious history of the period.
Yes, you're right Lilly. It can be confusing indeed. I had some doubts how to translate the conditional sentence. I probably should have typed in this way:
So, if we considered that the previous law books were also these historical ones, it would turned out that the previous books also contained the glorious history of the period.