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All answers having "Brought about" as clue:

3 Character Answers:

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DID



4 Character Answers:

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BRED



5 Character Answers:

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BEGAT

LEDTO



6 Character Answers:

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CAUSED

WORMED



7 Character Answers:

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CREATED

INDUCED



8 Character Answers:

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CALLIOPE

EFFECTED



10 Character Answers:

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OCCASIONED