Complex sentence: On April 2,1868, an earthquake with a magnitude estimated between 7.25 and 7.9 on the Richter scale rocked the southeast coast of Hawaii; making it the most destructive earthquake in Hawaii's history.
Split into simpler sentences: On April 2,1868, an earthquake with a magnitude estimated between 7.25 and 7.9 on the Richter scale rocked the southeast coast of Hawaii. It was the most destructive earthquake in Hawaii's history.