Complex sentence: Udhna was a Town which was upgraded as a Nagar Panchayat from Gram Panchayat in 1967 and owing to its industrial development it witnessed the growth in population and Udhna Municipality was formed in 1979.
Split into simpler sentences: Udhna was a town which was upgraded as a Nagar Panchayat from Gram Panchayat in 1967. Owing to its industrial development, it witnessed the growth in population, and Udhna Municipality was formed in 1979.