Book 7 · Middle school II

List 1 · Forced removal

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  List 1 · Forced removal

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List 2 · Extinction

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  List 2 · Extinction

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List 3 · Greek myth & toil

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  List 3 · Greek myth & toil

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List 4 · Estate of Washington

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  List 4 · Estate of Washington

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List 5 · Wealth & whim

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  List 5 · Wealth & whim

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List 6 · League & lax

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  List 6 · League & lax

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List 7 · Greed & gold

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  List 7 · Greed & gold

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List 8 · Factory tragedy

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  List 8 · Factory tragedy

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List 9 · Conquest

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  List 9 · Conquest

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List 10 · Manatee waters

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  List 10 · Manatee waters

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List 11 · Deep-sea frontier

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  List 11 · Deep-sea frontier

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List 12 · Tilt of the Earth

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  List 12 · Tilt of the Earth

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List 13 · Storms & subtlety

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  List 13 · Storms & subtlety

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List 14 · Diplomacy

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  List 14 · Diplomacy

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List 15 · Endurance

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  List 15 · Endurance

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List 16 · Habitat loss

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  List 16 · Habitat loss

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List 17 · Frontiers

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  List 17 · Frontiers

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List 18 · Innovation

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  List 18 · Innovation

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List 19 · Conservation

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  List 19 · Conservation

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List 20 · Cultures

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  List 20 · Cultures

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