One immediate effect: if James is not Catholic, there wiill be no Monmouth's rebellion. He had no chance, but because of the religion issue, he thought he did. Without it, he won't even try.
If there is no Monmouth's rebellion, then there is no Bloody Assizes, and James is less paranoid and arbitrary. This diffuses much of the political energy behind the Glorious Revolution.
If there is no Monmouth's rebellion, then there is no Bloody Assizes, and James is less paranoid and arbitrary. This diffuses much of the political energy behind the Glorious Revolution.