Complex sentence: Four of Booth's co-conspirators were hanged on July 7,1865, others received long prison sentences, but Booth himself, the book concludes, eventually escaped to England, his whereabouts after that uncertain.
Split into simpler sentences: Four of Booth's co-conspirators were hanged on July 7,1865. Others received long prison sentences, but Booth himself, the book concludes, eventually escaped to England, his whereabouts after that uncertain.