Complex sentence: During his second term he held secret negotiations with the Church of Greece which had declared itself autocephalous in 1833, and in 1850 issued a "Patriarchal and Synodical Act" declaring the autocephaly of the Church of Greece in accordance with canon law.
Split into simpler sentences: During his second term he held secret negotiations with the Church of Greece which had declared itself autocephalous in 1833. In 1850 he issued a "Patriarchal and Synodical Act" declaring the autocephaly of the Church of Greece in accordance with canon law.