Complex sentence: At first the Ottoman authorities supported the League of Prizren which initial position was based on the religious solidarity of Muslim landlords and people connected with the Ottoman administration who emphasized Muslim solidarity and called for defense of Muslim lands, including present-day Bosnia and Herzegovina.
Split into simpler sentences: At first the Ottoman authorities supported the League of Prizren, whose initial position was based on the religious solidarity of Muslim landlords and people connected with the Ottoman administration. The Ottomans favoured and protected Muslim solidarity, and called for defense of Muslim lands, including present-day Bosnia and Herzegovina.