Complex sentence: Considering that the maritime causeway is where 50% of the world's commerce passes through and has been the site of multitudes of battles, the role of the Pannai in maintaining world-commerce is crucial.
Split into simpler sentences: Considering that the maritime causeway is where 50% of the world's commerce passes through and has been the site of multitudes of battles. The role of the Pannai in maintaining world-commerce is crucial.