Complex sentence: Encyclopædia Iranica states that at an unspecified time he moved to Iran on the request of then-crown prince Abbas Mirza, and entered Iranian service; according to "Alma Mater" he advocated Iranian intervention in the November Uprising (1830-1831).
Split into simpler sentences: Encyclopædia Iranica states that at an unspecified time he moved to Iran on the request of then-crown prince Abbas Mirza, and entered Iranian service. According to "Alma Mater" he advocated Iranian intervention in the November Uprising (1830-1831).