̱ ߱
1. ̱ ˾ƾ 21⸦ ִ
̱(ڸ) () ϸ, 21 ȸ() . 20 , ְ бDZ()μ, ġ() ()ϴ ߽(), ٷ ̱̱ ̴.
ġ ϸ, ѹα Ȳ() ؼ () . ѹα () ġ ÷() ġǾ ִ ſ̴.
̱ 縦 () Ǹ, Ͼ()Ͽ ִ.
, ߱ () ̸, () () ߰ ڷγ͵ ̴.
20κ 縦 ֵϴ ̱ 簡 ϴٸ, η() ü() ̷ ִ.
Ȳ() ٸ, ѱ() ʾҰ, Ʈ£ ϿǷ, ѹα , Ȳ ϰ ִ Ǵܵȴ.
̷ () °, () ӵ ̶ (), .
Ͻ() ġ Ŵ 帧 ٲٸ, ѹݵ() ݼ () Ǿ ̴. ѹα () (٤)̴.
, , μ ȸڵǴ , ʹ(ڶ) ɻ翩߸ Ѵ.
() ü, ڰ ()Ѵٴ , û ȥ ϴ ̱ ̴.
ȭ ()Ű ؼ, ս() (ұ)ؾ Ѵ. Ȳ 븩̴.
ƴϴ, ȸ , ̹ ƽþ ̵ϴ ִ. ŭ ġ 忡, ƽþ () () Ǿ ̴.
-Ϸ-
̱ ߱
1. ̱ ˾ƾ 21⸦ ִ
2. ũ ݷ(Christopher Columbus, 1450~1506)
3. 7 (Ҵ, Seven Years' War, 1756~1763)
4. 뿵(, United Kingdom of Great Britain)
5. 13 Ĺ(1607~1732)
6. (George Washington, 1732~1799)
7. ̱(ڸ) (Լء)
(American War of Independence, 1775~1783)
8. () (Boston Tea Party, 1773)
9. Ƹī ߱() ()
(Constitution of the United States, 1789)
10. (, American Civil War, 1861~1865)
11. ߽-̱ (Mexican-American War, 1846~1848)
12. 1 (World War I, 1914~1918)
13. Ȳ(, Great Depression, 1929~1939)
14. (New Deal, 1933~1936)
15. 2 (World War II, 1939~1945)
16. (, Cold War, 1945~1991)
17. ѱ(, Korean War, 1950~1953)
18. Ʈ (Vietnam War, 1964~1975)
19. (The Gulf War, 1990~1991)
20. īϽź (Afghanistan War, 2001~2014)
21. ̶ũ (Iraq War, 2003~2011)
22. (China?United States trade war, 2018~)
23. ڷγ̷ (coronavirus pandemic, 2019~)