Original sentence: He asserted that Imperial Russia did not practice any real censorship in the style of the Soviet Glavlit, that political prisoners typically were not forced into labor camps in spite the existence of the katorga, and that the number of political prisoners was only one ten-thousandth of those in the Soviet Union
Edited sentence: He asserted that Imperial Russia did not practice any real censorship in the style of the Soviet Glavlit, that political prisoners typically were not forced into labor camps in spite of the existence of the katorga, and that the number of political prisoners was only one ten-thousandth of those in the Soviet Union