Complex sentence: In 1917, Rajaji was elected Chairman of the municipality and served from 1917 to 1919 during which time he was responsible for the election of the first Dalit member of the Salem municipality.
Split into simpler sentences: In 1917, Rajaji was elected Chairman of the municipality and served from 1917 to 1919. As Chairman of the Salem municipality, he was responsible for the election of the first Dalit member of the Salem municipality.