What year was Mount Rushmore built?
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1927
1932
1927
1932
1927
1932
1927
1932
1927
1932
1931
1932
1931
1932
1927.
1927-32
1931
1932
1927.
1931
1927-32
1932
1941
1939
1927.
1931
1941
1932
1926
1927-32
1927-1976
1939
1927,
1927-1984
1931
1927-27
1927.
1927-1938
1941
1932
1926
1939
1941
1931
1927-32
1927-1981
1927-1976
1927,
1940
1927.
1927-1938
1932
1927-27
1941
1926
1940
1939
1931
1927-1984
1927,
1927-32
1927-1981
1927-1976
1927.
1941
1927-1938
1932
1940
1926
1939
1931
1941
1921
1927,
1940
1927-32
1927.
1932
1927 and 1941
1926
1927 -
1927-28
1939
1941
1927-27
1931
1940
1921
1927,
1927-1984
1932
1927-41
1927.
1927-32
1941
1926
1940
1939
1927 -
1931
1927-27
1921
1941
1932
1927-1981
1927-1976
1927,
1927 –
1940
1927 and 1941
1927.
1926
1927;
1927-80
1927-32
1939
1927-28
1931
1941
1927 -
1921
1940
1932
1927-1984
1927-41
1927-1938
1927,
1926
1927.
1927 –
1927;
1939
1941
1931
1927-32
1940
1927-27
1921
1927 -
1932
1941
1927-1981
1927-1976
1926
1927 and 1941
1927-36
1927,
1940
1939
1927.
1927;
1927 –
1931
1927-32
1928
1929
1921
1941
1932
1927 -
1940
1927-1984
1927-41
1926
1927-80
1927-1938
1922
1939
1927-28
1927,
1928
1929
1931
1927.
1927;
1941
1927 –
1921
1940
1927-32
1932
1926
1928
1929
1927 -