What year was Mount Rushmore built?
1927
1876
1889
1876
1908
1889
1876
1905
1908
1889
1883
1907
1876
1905
1880
1879
1908
1886
1889
1881
1883
1907
1876
1885
1905
1890
1880
1879
1908
1889
1883
1907
1876
1904
1884
1886
1881
1905
1908
1889
1885
1883
1872
1907
1890
1880
1876
1905
1879
1908
1875
1904
1884
1886
1889
1869
1876
1881
1885
1883
1872
1905
1907
1909
1908
1889
1887
1890
1880
1879
1876
1875
1924
1904
1908
1884
1886
1889
1869
1881
1885
1873
1883
1876
1871
1872
1905
1907
1909
1887
1890
1880
1889
1860
1878
1879
1876
1908
1875
1924
1904
1884
1886
1889
1869
1881
1885
1873
1883
1871
1872
1905
1860
1876
1907
1909
1887
1913
1890
1915
1880
1878
1879
1876
1908
1875
1924
1904
1884
1903
1886
1888
1889
1869
1874
1881
1885
1873
1883
1871
1872
1905
1907
1926
1909
1882
1887
1913
1890
1877
1915
1880
1878
1879
1876
1896
1908
1875
1924
1904
1884
1903
1886
1888
1889
1869
1874
1881
1922
1885
1873
1883
1871
1872
1905
1907
1926
1909
1882
1887
1913
1890
1877
1915
1880
1878
1879
1876
1896
1908
1875
1924
1891
1904
1884
1903
1886
1888
1912
1889
1869