Complex sentence: From 1863 to 1865, he was a Kentucky state senator; from 1865 to 1866 he was an assistant United States Attorney, and from 1866 to 1870 district attorney for the Louisville district.
Split into simpler sentences: From 1863 to 1865, he was a Kentucky state senator. From 1865 to 1866 Bristow was an assistant United States Attorney, and from 1866 to 1870 district attorney for the Louisville district.