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AP World History Notes

5.10.5 Ideas That Shaped the Era: Enlightenment and Nationalism

AP Syllabus focus: ‘Enlightenment philosophies and nationalism shaped revolutions by challenging tradition, emphasizing reason, and redefining political communities.’

Revolutions from 1750 to 1900 were driven not only by material grievances but also by powerful new ideas.

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Jean-Jacques-François Le Barbier’s allegorical rendering of the 1789 Declaration of the Rights of Man and of the Citizen visually ties revolutionary authority to universal rights, law, and the nation. The surrounding symbols (including the broken chains and classical emblems) emphasize the rejection of inherited privilege and arbitrary power in favor of a rational, rule-based political order. Source

Enlightenment thought and nationalism reshaped how people justified authority, imagined rights, and defined who belonged to a political community.

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Print lowered the cost and increased the speed of persuasion.

Key mechanisms included:

  • Reprinting and translating pamphlets and newspapers in multiple cities

  • Creating “standard” political vocabularies (rights, nation, constitution)

  • Coordinating activists through shared slogans, symbols, and reported events

Popular sovereignty locates authority in “the people” as citizens of a polity.

National self-determination locates authority in a “people” defined as a nation, often tied to identity and territory.
They overlap, but national claims can exclude residents who are labelled non-national.

Nationalism prioritises congruence between a nation and a state.

If a nation is fragmented across many states, nationalism can push unification.
If a nation is ruled within a larger empire or composite state, nationalism can push secession.

States promoted shared identity through schooling by:

  • Standardising language and curricula

  • Teaching national history as a common story

  • Encouraging civic rituals (pledges, commemorations)

This often marginalised regional languages and minority traditions.

Claims of reason could delegitimise opponents as “irrational” or “backward.”

Political actors used “rational” language to:

  • Justify centralisation and state-building

  • Portray reforms as inevitable “progress”

  • Dismiss rival identities or customs as obstacles to the nation’s future

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