Complex sentence: Pandalam was added to Travancore in 1820.Before the formation of Pathanamthitta district, Pandalam was in Mavelikara taluk of Alappuzha district.
Split into simpler sentences: Pandalam was added to Travancore in 1820. Pandalam is situated in Adoor Thaluk of Pathanamthitta district.Before the formation of Pathanamthitta district, Pandalam was in Mavelikara taluk of Alappuzha district.