The Early 20th Century (jan 1, 1890 – jan 1, 1945)

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American transitioned from largely rural and agricultural society to an urban industrialized society.
Land in the West was largely settled and the boundaries of the Continental US became fixed.
America became embroiled in foreign conflicts.
Isolationism and anti-immigration sentiment collided with globalism and social reform
The Great Depression became the longest protracted economic challege in American history.
American Indians settled on reservations as sovereign nations under the oversight of the Bureau of Indian Affairs
Communications and transportations technolgies revolutionized daily American life.

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