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statementVerified

Portuguese India begins cartaz sea-passes as a tax and exclusion machine in the wake of the voyages

Printed cartazes are not a 1502 customs act in his hand. In the causal graph this event strengthens Institutional Corruption, a driver that strengthens Political corruption index — a worsening welfare path.

Sources: [1][2]

Read the full account

Printed Décadas and later economic histories describe cartazes: passes that made unlicensed Indian Ocean shipping a prize. He is an opener of the route, not the unique clerk of every later pass.

Context

Do store the printed system as a consequence-heading of the Cape route wars.

Vasco da Gama Shared work with other named actors remains in the record.

Vasco da Gama’s documented role is bounded by other offices and collaborators named in the sources below.

Conventional years are c. 1460s–1524.

Why it matters

Printed cartazes are not a 1502 customs act in his hand.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Vasco da Gama

    Person

    Direct responsibility

    responsibility level 0.4 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactPortuguese India begins cartaz sea-passes as a tax and exclusion machine in the wake of the voyages
    2. strengthensDriverInstitutional Corruption
    3. strengthensIndicators (3)Political corruption index
    Worsening path

    impact weight 0.55 · Effect from 1 December 1502 · verified

    Printed cartazes are not a 1502 customs act in his hand.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Journal of Economic History — later spice-route studiesCambridge University Press · High credibility · verified
  2. 2.Library of CongressLibrary of Congress · High credibility · verified
What the sources establish

Vasco da Gama did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorVasco da Gama
  2. contributed toFactPortuguese India begins cartaz sea-passes as a tax and exclusion machine in the wake of the voyages
  3. strengthensDriverInstitutional Corruption
  4. strengthensIndicatorPolitical corruption index

Cite this page

Factrail. (2026). Portuguese India begins cartaz sea-passes as a tax and exclusion machine in the wake of the voyages. Factrail. https://factrail.ai/facts/vdg-cartaz-system

https://factrail.ai/facts/vdg-cartaz-system

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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