Level 72
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Population and Cities of the World

Linguistic Geography and Language Diffusion

A deeper look at how languages spread, evolve, and compete for space across the human world, from the comparative method that first revealed the great language families to the digital platforms now reshaping which languages survive.

60-Second Review

Express review

A condensed, point-by-point summary of the module, for reviewing right before a test or exam.

  1. Language Families and Historical Linguistics. Comparative linguistics groups the world's roughly 7,000 languages into families descended from common ancestors.
  2. Language Diffusion and Contact Zones. Languages spread by relocation and expansion diffusion, leaving contact zones where features blend across borders.
  3. Pidgins, Creoles, and Lingua Francas. Pidgins arise from urgent contact needs; creoles are born when a community adopts one as its native tongue.
  4. Endangered Languages and Linguistic Extinction. Most of the world's languages are spoken by shrinking communities and face a real risk of disappearing this century.
  5. Official Languages and Multilingual States. States handle internal multilingualism very differently, from single official languages to constitutionally protected pluralism.
  6. Dialect Geography and Isoglosses. Dialectologists map language variation using isoglosses, the boundary lines of individual linguistic features.
  7. Language Policy and National Identity. States often legislate language directly, treating it as central to sovereignty, identity, and cultural survival.
  8. Digital Media and Global Language Change. The internet has reshaped which languages spread, decline, or find new life through digital documentation and use.

This module continues after "Cultural and Human Geography" in the syllabus. If you haven't reviewed it yet, it may help set the context.

Key points

Visual module map

1Language Families and Historical Linguistics
2Pidgins, Creoles, and Lingua Francas
3Official Languages and Multilingual States
4Dialect Geography and Isoglosses
5Digital Media and Global Language Change

Alternative visual view: a simplified sequence of some of the module's key points, in their order within the syllabus.

Your module mastery

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Approximate breakdown by skill
Understanding of historiographical debate0%

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Final test

You need to review all key points to unlock the final test.

Optional mini-games

Extra practice, with no penalty, to reinforce the module's content.

Review Flashcards

Review each key point with cards that flip to reveal the summary.

Memory

Match each concept with its definition in as few attempts as possible.

Time Attack

Answer true or false statements before time runs out.

Chronological Order

Put the module's key points back in their original order.

Further reading

Bibliography and cited sources used to create this module.

  • Crystal, D. (2000). Language Death. Cambridge: Cambridge University Press.
  • Lewis, M. Paul, Simons, Gary F., and Fennig, Charles D. (eds.) (2023). Ethnologue: Languages of the World (26th ed.). Dallas: SIL International.
  • Holm, J. (2000). An Introduction to Pidgins and Creoles. Cambridge: Cambridge University Press.
  • Trudgill, P. (1983). On Dialect: Social and Geographical Perspectives. Oxford: Blackwell.
  • Kloss, H. (1967). "Abstand Languages and Ausbau Languages." Anthropological Linguistics, 9(7), 29-41.
  • Labov, W., Ash, S., and Boberg, C. (2006). The Atlas of North American English: Phonetics, Phonology and Sound Change. Berlin: Mouton de Gruyter.