Why was the invasion of the byzantine empire by the turk significant

The invasion was significant, because when the Turks invaded the Byzantine Empire, the Holy Lands in the empire were taken over, which caused the  Pope to supply troops for the Crusades.

judaism, christianity and islam, are all abrahamic religions and therefore have in common the hebrew idea of a single god which is the source of all morality. the idea of the covenant is only related to judaism, while dharma is a concept of indian religions and the four noble truths are basic principles of buddhism.