What year was Denver founded?
1858
1859
1861
1868
1859
1858
1861
1868
1859
1858
1861
1868
1867
1859
1858
1863
1869
1871
1861
1868
1867
1859
1864
1876
1858
1863
1869
1871
1861
1868
1867
1859
1864
1876
1858
1863
1869
1871
1861
1872
1868
1867
1859
1864
1858
1863
1869
1871
1876
1861
1872
1868
1867
1859
1870
1858
1863
1869
1864
1871
1861
1868
1867
1859
1876
1866
1872
1870
1862
1858
1861
1868
1867
1863
1859
1869
1864
1857
1871
1858
1876
1866
1861
1872
1874
1870
1862
1868
1859
1858
1867
1863
1869
1864
1857
1871
1861
1868
1859
1876
1866
1872
1874
1870
1862
1858
1861
1868
1867
1863
1873
1859
1869
1856
1864
1858
1857
1871
1876
1866
1861
1872
1874
1868
1859
1870
1862
1858
1867
1863
1873
1869
1861
1868
1859
1856
1864
1857
1871
1876
1866
1872
1861
1874
1870
1862
1858
1868
1867
1865
1863
1859
1873
1869
1853
1856
1864
1857
1871
1876
1866
1859
1861
1872
1874
1870
1862
1858
1868
1867
1865
1863
1873
1859
1869
1853
1856
1864
1857
1871
1876
1866
1861
1872
1874
1851
1870
1862
1858
1868
1877
1867
1865
1863
1873
1859
1869
1881
1854
1853
1856