The history of the USA

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Across
  1. 7. Withdrawal of Southern states from the Union
  2. 10. Expansion of factories and manufacturing
  3. 11. Movement to end slavery
  4. 13. Political freedom gained from British rule in 1776
  5. 14. System of government based on popular participation
  6. 15. European settlement in North America
Down
  1. 1. Movement of people into the United States
  2. 2. Armed struggle leading to the creation of the United States
  3. 3. Post–Civil War period of national rebuilding
  4. 4. Severe economic crisis of the 1930s
  5. 5. Territorial growth across the continent
  6. 6. National preparation for World War II
  7. 8. Supreme legal document adopted in 1787
  8. 9. Forced labor system in early American history
  9. 12. System of shared power between national and state governments