Complex sentence: In 1947 he observed the lifestyle of the people in Srikakulam district and Vizianagaram district, as well as the major changes in the lifestyles of the people living in the cities.
Split into simpler sentences: In 1947 he observed the life style of the people in Srikakulam district and Vizianagaram district. He observed the major changes in the lifestyles of the people in the cities.