1840S
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Centuries
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18th century
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19th century
-
20th century
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Decades
:
1810s
1820s
1830s
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1840s
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1850s
1860s
1870s
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Years:
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
Events and Trends
Technology
First use of
anaesthesia
in an operation, by
Crawford Long
War, peace and politics
First signing of the
Treaty of Waitangi
(Te Tiriti o Waitangi) on
February 6
,
1840
at
Waitangi
New Zealand
. The treaty between the
British Crown
and
Maori
made New Zealand a British
colony
and is considered the founding point of modern New Zealand.
Mexican-American War
(
1846
-
1848
) fought between
Mexico
and the
United States of America
. The latter emerges victorious and gains undisputed control over
Texas
while annexing portions of
Arizona
,
California
and
New Mexico
.
Wave of
revolutions
in
Europe
. Collectively known as the
Revolution of 1848
.
Culture and Religion
Karl Marx
writes
The Communist Manifesto
, first published on
February 21
,
1848
.
Other
Introduction of the
postage stamp
. The first of them is
Penny Black
, issued by the
United Kingdom
on
May 1
,
1840
.
World Leaders
Emperor
Ferdinand I
(
Austria
)
Chancellor
Klemens Wenzel von Metternich
(
Austria
)
Emperor
Franz Josef
(
Austria-Hungary
)
King
Louis-Philippe
(
France
)
Pope Gregory XVI
Pope Pius IX
Emperor
Nicholas I
(
Russia
)
Queen
Victoria
(
United Kingdom
)
Prime Minister
Lord Melbourne
(
United Kingdom
)
Prime Minister Sir
Robert Peel
(
United Kingdom
)
Prime Minister
Lord John Russell
(
United Kingdom
)
President
Martin Van Buren
(
United States
)
President
William Henry Harrison
(
United States
)
President
John Tyler
(
United States
)
President
James Knox Polk
(
United States
)
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