Original: It was delivered at the dedication of the Soldiers' National Cemetery in Gettysburg, Pennsylvania, on the afternoon of Thursday, November 19, 1863, during the American Civil War, four and a half months after the Union armies defeated those of the Confederacy at the decisive Battle of Gettysburg.
Simplified: It was delivered at the Soldiers' National Cemetery in Gettysburg, Pennsylvania, on November 19, 1863, during the American Civil War, about four months after the North defeated the South at the Battle of Gettysburg.