Imagined community
Appearance
The Imagined Community is the concept strongly supported by Benedict Anderson which states that a nation is socially constructed and ultimately imagined by the people who percieve themselves as part of that group. The main causes of the nationalism that derives from the imagined community are the reduction of priveleged access to particular script languages (i.e. latin), the movement to abolish the ideas of divine rule and monarchy, as well as the emergence of printing press capitalism - all phenomenon occurring with the start of the Industrial Revolution.
References
Benedict Anderson. Imagined Communities ISBN 0860913295