3h

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Across
  1. 3. - Incorporation of territory into another geopolitical entity (10 letters, ten)
  2. 6. - Intellectual movement of the 17th and 18th centuries (12 letters, twelve)
  3. 8. - Relating to the arts and intellectual achievements (8 letters, eight)
  4. 9. - Policy of extending a country's power (11 letters, eleven)
  5. 11. - Agreement between nations for mutual benefit (8 letters, eight)
  6. 12. - Act of entering a territory with hostile intent (8 letters, eight)
  7. 13. - Act of establishing a community (10 letters, ten)
  8. 14. - Traveling to discover new lands (11 letters, eleven)
Down
  1. 1. - Structure built to commemorate a person or event (8 letters, eight)
  2. 2. - Process of interaction and integration (13 letters, thirteen)
  3. 4. - Development of industries in a country (15 letters, fifteen)
  4. 5. - Medieval system of land ownership (9 letters, nine)
  5. 7. - Process of selecting a candidate for office (10 letters, ten)
  6. 10. - Period before written records (11 letters, eleven)