Complex sentence: He began a secret correspondence with Bahá’ís of Iran and Ottoman authorities allegedly stating that 'Abdu’l-Bahá had claimed a station equal to a Manifestation of God and was conspiring with foreign authorities to overthrow the Ottoman Empire.
Split into simpler sentences: He began a secret correspondence with Bahá’ís of Iran and Ottoman authorities. Allegedly stating that 'Abdu’l-Bahá had claimed a station equal to a Manifestation of God and was conspiring with foreign authorities to overthrow the Ottoman Empire.