Abraham Lincoln Was Assassinated a Few Months Before…
The Secret Service was created a few months after the death of Abraham Lincoln who was assassinated on April 15, 1865.

Source: Bored Panda
The legislation to create the Secret Service was actually sitting on Lincoln’s desk the night he died. So, who knows, maybe if the service was created a few months earlier they could have stopped the plot to assassinate him.
The next one connects a royal wedding to a terrorist. See the next photo.