Revolutions of the 18th and 19th centuries

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Across
  1. 3. identification with one's nation
  2. 4. supreme power or authority
  3. 5. a jump in tech in the 1700s-1900s
  4. 6. the study of fundamental questions
Down
  1. 1. European movement of individualism
  2. 2. the principle of being independent