GMAT Critical Reasoning (CR) | Historian: The vast majority of scholars studying the American Civil

The historian is the speaker, and he says,"my contention that when the Civil War began in 1861, it was already true that the Confederacy could not prevail without the intervention of a major foreign power such as Great Britain or France."

Therefore the contention that needs to be strengthened is "when the Civil War began in 1861, it was already true that the Confederacy could not prevail without the intervention of
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