How far did opposition grow under Alexander II?

Edit Answers
12345678910111213141516171819202122
Across
  1. 4. Opposition group which tended to come from younger people, often the children of the group in clue 7
  2. 8. The half in clue 22 was led by who?
  3. 10. The half in clue 19 was responsible for the Tsar's what?
  4. 13. Branch of the opposition in clue 7 who wanted to catch up with the Western world by copying their ideas
  5. 14. General assassinated by the group in clue 17, 1878
  6. 15. 18__, year in which the group in clue 17 split
  7. 16. Book written by the thinker in clue 5
  8. 19. The other half of the group in clue 17, advocated violent methods
  9. 21. Set up at Moscow University in 1863
  10. 22. Half of the group in clue 17 which worked peacefully
Down
  1. 1. The idea of taking politics to the people
  2. 2. The general assassinated in 1878 was head of which organisation?
  3. 3. Branch of the opposition in clue 7 who wanted a Russian path to a better future
  4. 5. Radical thinker who believed in a peasant-led revolution creating individual freedom
  5. 6. The other name for the idea in clue 1
  6. 7. Opposition group which sprang from the educated middle classes
  7. 9. Radical thinker who believed in socialism and a peasant-led revolution
  8. 11. Radical thinker who believed in Marxism and wanted a worker revolution
  9. 12. Of the amount trialled in 1877, over how many were freed?
  10. 17. Group following the idea in clue 1
  11. 18. Radical thinker who believed in educating the peasant masses
  12. 20. Trial of the what, held in 1877?