Complex sentence: It is a Kannada speaking region of the Hyderabad State that was ruled by the Nizams of Hyderabad until 1948 and after merging with India union, the region was the part of Hyderabad State until 1956.
Split into simpler sentences: It is a Kannada speaking region of the Hyderabad State that was ruled by the Nizams of Hyderabad until 1948. After merging with the Indian union, the region was part of Hyderabad State until 1956.