What year did the battle of Gettysburg occur?
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1863
1864
1863
1864
1863
1864
1862
1865
1863.
1864
1862
1865
1864
1862
1863.
1865
1864
1862
1863.
1865
1864
1862
1863.
1865
1864
1862
1863.
1865
1861
1863-65
1875
1864
1862
1863.
1865
1861
1875
1864
1862
1863-65
1863-1963
1865
1863.
1861
1875
1863-76
1863-66
1864
1862
1813
1863-65
1863,
1865
1863-1963
1861
1875
1863.
1864
1862
1863-76
1813
1863-65
1881
1863,
1865
1861
1877
1875
1863-1963
1863.
1863-66
1864
1862
1813
1881
1865
1863-65
1863,
1861
1877
1875
1864
1862
1863-1963
1863.
1863-76
1863-66
1813
1881
1865
1863,
1861
1877
1863-65
1875
1864
1862
1813
1863.
1863-1963
1863-72
1881
1865
1861
1877
1875
1863,
1864
1862
1863-65
1813
1863-76
1863-66
1863.
1881
1865
1863;
1861
1877
1875
1866
1864
1862
1863,
1813
1863-65
1863-1963
1863-72
1863-76
1863.
1863!
1881
1865
1873
1863;
1861
1877
1875
1864
1862
1863,
1813
1863-66
1866
1863-65
1881
1863.
1865
1873
1863-D
1861
1875
1863;
1864
1862
1813
1814
1872
1863,
1877
1863!
1863-1963
1863-72
1863-76
1863-66
1865
1863-65
1863.
1861
1875
1858
1866
1864
1863;
1862
1881
1813
1863,
1865
1873
1814
1872
1863-88