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Eocene epoch

(Encyclopedia) Eocene epochEocene epochēˈəsēnˌ [key], second epoch of the Tertiary period in the Cenozoic era of geologic time, from approximately 54.9 to 38 million years ago. The Eocene in North…

Gibbons v. Ogden (1824)

Historical BackgroundThe McCulloch v. Maryland decision in 1819 fanned the flames of controversy over States' rights and national supremacy. By 1824, Chief Justice John Marshall had reached…