"The French and Indian War was fought to decide if Britain or France would be the Strong power in North America."
1) One religion could have incited wars (such as the crusades)
2) Two religions could be fighting each other (Hindus and Muslims at the Partition of India)
3) Religion can prohibit wars and violence(Jainism)
4) Religion can inspire people to help other people in wars (some Churches during the Holocaust)
That would be the legislative branch, I hope this helps!