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3. л鿡 α ִ
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̱ 迡 α 3° ̸ δ 4 شϴ Դϴ. ̱ 50 ֿ ϳ DC ̷ ֽϴ. 200Ⱓ 縦 ؼ ̱ 鿡 ̷Ͽϴ. , , IT( ), , ġ о ְ γ ̱ ֽϴ. Ƹ л Ͽ ̱ ϰԲ ϴ ϴ.
ϳ, ̱ ϴ ŷ ̳ Ѵٴ Դϴ. ü 漺 迡 ٵ , ܱ л ̱ б б ҷ鿴ϴ. 2 ̱ Ȳȭ κ л ̱ б Ƶ鿴ϴ. ߵ ƽþ л鵵 ̵ ڸ ̱ п 500,000 ܱ л ٴϰ ֽϴ.
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̱ Ϻ 25迡 ϴ 並 ֽϴ. ̱ Ĵ ̰ ϴ; 100° ڿ ο η մϴ. ū µ ָ մϴ. ÷θٿ ܿ£ ٴٿ Ϻ ȣ 10 µ ϴ. ؾ ϳ µ մϴ. ܿ , ϴ. ̱ ϵ µ ĶϾ(California) 븮(Death Valley) 56.7̸ µ 1971 ˷ī(Alaska) νƮ ũũ(Prospect Creek) 62.2 ̾ϴ. ü ʺ ʰ ̱ ȭϰ ĸ ̰ ʰ ʺ ̱ Ϻ 2/3 ߿ ϰ ˴ϴ.
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̱ ߰ ս ظ ݷҹ ؼ ֱ ڵ Ϻε ̱ ؾ ռ 1000濡 ߴٰ ϰ ֽϴ.
Ĺȭ 16 ƿ챸ƾ (Saint Augustine- Florida) 鼭 ۵Ǿϴ. 谡 ȮǴ Ʈ η (St. Lawrence) ȣ θ ѷ Ϻ ± Ͽϴ. 뼭 ױ۷ Ҹ ӽŸ (Jamestown-Ͼ) ϴ. 鿡 Ŀٶ ̾ϴ. ڵ øӽ (Plymouth Colony) (Massachusetts)Դϴ. 뼭 踦 ҽϴ. ڵ 100 ̾ ¡ ̱ ڿ ū Ÿϴ. 1760뿡 ᱹ Ͼ ̱ 1776 ߽ϴ.
19 ݿ ̱ 並 ȮϿ 1846 ĶϾƸ μ ȿ ߽ϴ. 19 Ĺݿ ̹ Ͽ ִ ֹ ε , ī 뿹 α Ʋ-Ϸ, ĭư ֹε ÷Ǿϴ. 20 ʿ ߾ ƽþƿ ڵ鵵 þϴ.
20 ̱ ִ , 뱹 Ǿϴ. ó ʾ ̱ ٶ ḻ ־ϴ. 20 Ĺݺο ҷð ̱ ̶ Ҹ ð 븳 ɼ η ӿ Ͽϴ. 1990뿡 ̱ ̷ غϰ ο ü 21⸦ մϴ.
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μ
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̱ α ü 75% ÿ ϸ ü 50% ֺ ϴ ÿ ȸԴϴ. ִ Ҽ (ĭ Ƹĭ-African American)μ α ü 13% ϸ д(Hispanic) 12% մϴ. ƽþư赵 ü α 4% մϴ. ̱ ӵȴٴ (Manifest Destiny) ̱ μ ƽϴ. 19 Ȱ Ȯ ô(Pioneer) ̱ε ɰ ϴ. ټ 𱹿 ظ ̱ ڵ ǿ ϰ ̱ մϴ.
л ̱ε մϴ. ȣǸ ̱ε ۵ ð Ƴ ð 米Ȱ ʽϴ. ̱ε ð ̶ ϱ ð ȿ ȿ ȰϷ մϴ. ܱ л ̱ε ϰ ð ˰ մϴ. Ǹ ̱ο ־ ٵ ߿մϴ. 湮 ̱ ΰ Ȱ 츦 ϴ.
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