Complex sentence: From 1919 until he committed suicide in 1963, he created his 155 volume diary which contained over 17 million words, making it one of the longest recorded diaries in the English language.
Split into simpler sentences: From 1919 until he committed suicide in 1963, he created his 155 volume diary which contained over 17 million words. Making it one of the longest recorded diaries in the English language.