What year did the first Opium War end?
1942
1860
1842
1860
1842
1860
1842
1860
1842
1860
1842
1860
1842
1860
1842
1860
1841
1842
1860
1841
1842
1860
1841
1842
1860
1841
1842
1860
1841
1840
1842
1860
1858
1841
1840
1842
1856
1860
1858
1841
1840
1842
1856
1860
1858
1841
1840
1842
1845
1856
1860
1858
1850
1841
1840
1842
1845
1856
1860
1858
1850
1841
1851
1840
1842
1845
1862
1856
1860
1858
1850
1841
1851
1840
1842
1861
1845
1856
1860
1858
1850
1841
1862
1852
1840
1842
1845
1856
1860
1851
1858
1861
1850
1841
1840
1842
1832
1845
1862
1856
1858
1850
1841
1852
1851
1840
1845
1856
1858
1861
1850
1864
1841
1840
1832
1845
1862
1856
1852
1858
1841
1839
1851
1840
1844
1861
1856
1858
1850
1864
1832
1841
1845
1840
1862
1856
1852
1839
1851
1858
1841
1840
1844
1861
1850
1864
1856
1858
1832
1841
1848
1860s
1845
1862
1840
1856
1852
1839
1851
1844
1858
1841
1860s
1840
1861
1850
1864
1832
1848
1858
1845
1862
1856
1852
1839
1840
1860s
1851
1844
1858
1861
1853
1850
1860 AD
1840
1860s
1864
1832
1848
1845
1862
1856
1852
1839
1851
1840
1860 AD
1844
1858
1861
1860.