This is the impact of the Civil War Battle of Gettysburg - turning point in American history!
The Gettysburg Address field, when the US President Lincoln's speech inspired the northern soldiers, and eventually the northern army victory also ended slavery in the United States, in order to clear the obstacles of American industrialization development!
The April 1906 San Francisco earthquake touched every american.
Wright brothers' first test plane, can humans fly? This is a milestone.
The two war, the Pacific War, American soldiers finally inserted flag on Iwo jima!
The buffalo skull, the bloody fur business in the United States in nineteenth Century, the poachers standing in front of the skull, which once caused a condemnation.
The global economic crisis of 1936, when the United States was in a recession, the attitude of a mother and two children.
