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The Jefferson National Expansion Memorial is a park located in St. Louis, Missouri, near the starting point of the Lewis and Clark Expedition. It was designated as a National Memorial by Executive Order 7523, on December 21, 1935, and is maintained by the National Park Service (NPS). The park was established to commemorate: *the Louisiana Purchase, and the subsequent westward movement of American explorers and pioneers; *the first civil government west of the Mississippi River; *the debate over slavery raised by the ''Dred Scott'' case. The memorial consists of a park along the Mississippi River on the site of the earliest buildings of St. Louis; the Old Courthouse, a former state and federal courthouse that saw the origins of the ''Dred Scott'' case; the Museum of Westward Expansion; and most notably the Gateway Arch, a steel catenary arch that has become the definitive icon of the city. ==Components== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jefferson National Expansion Memorial」の詳細全文を読む スポンサード リンク
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