What Was Ellis Island? (What Was?)

What Is the Statue of Liberty? (What Was?)

What Were the Salem Witch Trials? (What Was?)

What Was the March on Washington? (What Was?)

What Was the Underground Railroad? (What Was?)

What Were the Twin Towers? (What Was?)

What Was the Great Depression? (What Was?)

What Was D-Day? (What Was?)

What Was Pearl Harbor? (What Was?)

Where Is Alcatraz? (Where Is?)

What Was the Battle of Gettysburg? (What Was?)