Complex sentence: By 5th century CE it became different from other Brahmi variants, was used in southern India (Karnataka and Andhra Pradesh), has involved into "Old Kannada script" by the 10th century CE was used to write Kannada and Telugu languages.
Split into simpler sentences: By 5th century CE it became different from other Brahmi variants and was used in southern India (Karnataka and Andhra Pradesh). It evolved into the "Old Kannada script" by the 10th century CE and was used to write Kannada and Telugu languages.