Complex sentence: Two people were killed in a traffic accident in Indiana caused by snowy roads on December 26, and an 18-year-old Ohio girl was killed when she lost control of her vehicle due to poor road conditions and crashed into a snow plow.
Split into simpler sentences: Two people were killed in a traffic accident in Indiana caused by snowy roads on December 26. An 18-year-old Ohio girl was killed when she lost control of her vehicle due to poor road conditions and crashed into a snow plow.