1821
1821 — Korea: 사현정(四賢井) 중건 / Japan: 伊能忠敬、『大日本沿海輿地全図』を完成させる / United States: Adams–Onís Treaty
6 events. The text is the source chronology verbatim; the terms are in Sources & licenses. The grey lines above and below are the surrounding 2 years.
| KoreaJoseon 1392–1897 | ChinaQing dynasty 1636–1912 | JapanEdo period 1603–1868 | United StatesUnited States 1776– |
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- 1819화성(華城)의 성문에 괘서가 발생함
- 1822순흥부사 이의원(李懿遠) 부임
- 1822봉화현감 박시원(朴時源) 부임
- 1823명온공주의 부마간택을 위해 12세에서 15세의 동자에게 금혼령을 내림.
- 1823명온공주가 동녕위 김현근과 혼인함.
- 1823금위영(禁衛營)에서의 동전 주전을 허가함李碩崙,
- 1823석호 유도성(石湖 柳道性) 출생
| - No events recorded for this year
- 1820September — The Jiaqing Emperor died.
- 1820Poverty becomes endemic in the Eight Banners
- 1820October — The Jiaqing Emperor's son the Daoguang Emperor became emperor of the Qing dynasty.
- 1823The Bible was first published in Chinese.
| - 伊能忠敬、『大日本沿海輿地全図』を完成させる。JA
| - Adams–Onís Treaty
- Missouri becomes a state
- Treaty of Chicago
- Florida becomes a U.S. territory; the 1819 Adams–Onís Treaty goes into effect
- 1819Alabama becomes the 22nd state in the U.S.
- 1819McCulloch v. Maryland (17 US 316 1819) prohibits state laws from infringing upon federal constitutional authority
- 1819Panic of 1819
- 1819African Slave Trade Patrol
- 1819Adams-Onís Treaty, including acquisition of Florida
- 1819Dartmouth College v. Woodward (17 US 518 1819) protects principle of honoring contracts and charters
- 1820Massachusetts divided in two with the admission of Maine as a state.
- 1820U.S. presidential election, 1820: James Monroe reelected president unopposed, Daniel D. Tompkins reelected vice president.
- 1820March 4, 1821 – President Monroe and Vice President Tompkins begin their second terms
- 1823Monroe Doctrine proclaimed
- 1823Arikara War
- 1823Treaty of Moultrie Creek
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