Because of existing alliances that caused them to be obliged to join forces with which ever side the country they were aligned with joined. This led to a domino affect as one country joined and then it's allied country's joined it on the side it had joined.
The heart was measured against a feather. If the heart was lighter than the feather then they pass. If it is heavier than the feather they fail. Anubis was the one that measured the heart.
I think it's B. New taxes placed on the clergy. Both individuals didn't want the other controlling them. But Philip IV of France taxed the clergy anyways?
