Very difficult crossword

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Across
  1. 1. A famous ancient city located in Mesopotamia
  2. 4. A period of European history marked by exploration and colonization
  3. 5. A devastating palague that swept through Europe in the 14th century
  4. 7. A famous artistic and intellectual movment that orginated in 14th-century Italy
  5. 8. A technological revolution that led to the development of factories and machines
  6. 9. A major world war that began in 1914
  7. 10. A major political and social revolution that overthrew the French monarchy
Down
  1. 2. A Cold War arms race between the United States and the Soviet Union
  2. 3. A series of watrs fought between France and Britain for control of North America
  3. 6. A prehistoric monument found in England