Complex sentence: They left neither artifacts nor monuments, and the only sources of information are scattered mentions in Buddhist and Jain literature.The Kalabhras were defeated by the join efforts of the Pallavas, Pandyas and Chalukyas Badami.
Split into simpler sentences: They left neither artifacts nor monuments, and the only sources of information are scattered mentions in Buddhist and Jain literature. Finally, the Kalabhras were defeated by the join efforts of the Pallavas, Pandyas and Chalukyas Badami.