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Infrastructure completed in 1840
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This
category
is for
infrastructure
completed in the
year
1840
.
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1790s
1800s
1810s
1820s
1830s
1840s
1850s
1860s
1870s
1880s
1890s
Subcategories
This category has the following 3 subcategories, out of 3 total.
D
Dams completed in 1840
(1 P)
E
Energy infrastructure completed in 1840
(1 P)
T
Transport infrastructure completed in 1840
(6 C, 1 P)