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History · Grades 9–12

Historical causation and comparing sources

Consider who created a source, when, for whom and for what purpose. A primary source is evidence from a context, not automatically unbiased truth.

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Prerequisites

Relevant school subject foundations and careful reasoning.

Study notes

Source context

Consider who created a source, when, for whom and for what purpose. A primary source is evidence from a context, not automatically unbiased truth.

Causation

Historical explanations often involve interacting conditions, triggers and decisions. Sequence alone does not prove cause.

Corroboration

Compare independent sources and note whether they share the same origin. Repeated copies are not independent confirmations.

Argument

Distinguish what a source states from what you infer. Acknowledge gaps and competing interpretations in the available record.

Worked examples

Does primary source mean guaranteed unbiased and accurate?

Origin and proximity do not remove perspective or error.

No

Which question concerns provenance?

Provenance describes origin and history.

Who created this document and in what context?

Check your understanding

  1. Why do five websites repeating the same unverified account not provide five independent confirmations?

  2. Which is a more careful causal claim?

    1. Every old document proves the same cause
    2. The policy may have contributed alongside other conditions
    3. The event happened later, so this alone caused it
    4. Only one cause can ever exist

  3. A timeline runs from year 1450 to year 1520 without a calendar boundary issue. Find elapsed years.

  4. How can a biased source still be useful to a historian?

Answers and marking guidance

Answers and marking notes
  1. They may all derive from one source, sharing its errors. Independence concerns the evidence chain, not the number of copies.

    Credit common origin.

  2. The policy may have contributed alongside other conditions

    Causation needs more than temporal order.

  3. 70 years

    1520−1450=70.

  4. It may reveal the creator's aims, language, assumptions or perspective even when factual assertions need checking.

    Credit usefulness with critical interpretation.

Further reading and review references

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