When did construction begin on the Washington Monument?
1848
1889
1883
1886
1876
1890
1888
1789
1895
1887
1889
1883
1860
1886
1876
1890
1865
1888
1869
1884
1889
1883
1860
1886
1895
1887
1876
1890
1865
1888
1896
1889
1883
1886
1869
1866
1884
1882
1885
1895
1860
1887
1889
1876
1890
1865
1883
1878
1888
1896
1886
1869
1866
1884
1898
1882
1893
1885
1892
1870
1860
1868
1895
1875
1887
1889
1876
1890
1865
1891
1850
1883
1878
1888
1863
1896
1886
1869
1866
1881
1884
1898
1872
1882
1893
1885
1892
1868
1895
1870
1860
1875
1887
1851
1889
1876
1860s
1890
1867
1865
1891
1850
1883
1878
1888
1863
1896
1886
1869
1866
1881
1884
1898
1872
1894
1877
1882
1893
1885
1892
1870
1860s
1860
1868
1895
1875
1887
1851
1889
1876
1890
1867
1891
1865
1864
1883
1860
1878
1888
1863
1896
1850
1880
1886
1869
1866
1897
1881
1884
1898
1872
1873
1894
1890s
1860
1879
1904
1902
1877
1882
1893
1885
1892
1905
1870
1868
1895
1875
1887
1851
1889
1876
1890
1867
1891
1865
1864
1890s
1883
1878
1888
1863
1896
1850
1880
1886
1855
1869
1866
1897
1881
1884
1898
1872
1873
1894
1879
1904
1902
1877
1882