1820S
align="center" |
Centuries
:
18th century
-
19th century
-
20th century
align="center" colspan=2 |
Decades
:
1790s
1800s
1810s
-
1820s
-
1830s
1840s
1850s
align="center" colspan=2 |
Years:
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
Events and Trends
Nationalistic independence movements helped reshape the world during this decade:
Greece
declares independence from the
Ottoman Empire
(
1821
).
Several countries declared their independence from
Spain
and
Portugal
:
The
Republic of Gran Colombia
under President
Simn Bolvar
(
1819
-
1828
) expands over
South America
Mexico
(
1821
)
Brazil
(
1822
)
The
United Provinces of Central America
were formed in
1823
.
World Leaders
Emperor
Francis II
(
Austria
)
Chancellor
Klemens Wenzel von Metternich
(
Austria
)
King
Louis XVIII
(
France
)
King
Charles X
(
France
)
Pope Pius VII
Pope Leo XII
Emperor
Alexander I
(
Russia
)
Emperor
Nicholas I
(
Russia
)
King
George IV
(
United Kingdom
)
President
James Monroe
(
United States
)
President
John Quincy Adams
(
United States
)
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1830s
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4th century bc
432
1829
620
621
623
31 bc
27 bc
23 bc
12 bc
14
19
37
68
69
43
41
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