Spanish word cuando comes from Latin quam, and later Latin quando ((interrogative) "When?". (relative) "When". Because. When.)
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quam (Latin)
(after comparative nouns) than. (in comparisons) as. In what (which) way, to what (which) degree; how, how much, as much as, as far as.
quando (Latin)
(interrogative) "When?". (relative) "When". Because. When.
cuando (Spanish)
When When.
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