German imperialists teamed up with Irish republicans and Indian nationalists during World War I; the resulting conspiracy trial ended in a courtroom assassination.
Why does Manhattan have two business separate districts? Turns out that it's not because of the usual story about bedrock depth.
In July 1863, over a thousand Irish dockworkers rioted against the Civil War draft in New York City in a four-day upheaval, targeting black workers and citizens.
Struck by something naturally beautiful in an American city? Odds are that you have stumbled across the work of Frederick Law Olmsted.