Complex sentence: This led Mustafa Kemal to commission Yunus Nadi to establish a new newspaper in Istanbul, to propagate and defend the principles of the republic and the democracy against the monarchy and the caliphate.
Split into simpler sentences: This led Mustafa Kemal to commission Yunus Nadi with the establishment of a new newspaper in Istanbul. This newspaper had the mission to propagate and to defend the principles of the republic and the democracy against the monarchy and the caliphate.