According to Map 21.1: Europe in 1815, which countries were considered the Great Powers of Europe in the first half of the nineteenth century? 
Definitions:
General Knowledge
Information on a wide range of subjects that is acquired through education and experience, not specialized in any specific field.
Represent Objects
The cognition to maintain, manipulate, or recreate the image or idea of something in the mind, despite its absence in the immediate environment.
Accurately or Inaccurately
Refers to the degree of correctness or error present in a statement, measurement, or assessment.
Age
The length of time that a person or thing has existed, typically measured in years.
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