What do all of these former Presidents have in common? Abraham Licoln,John F. Kennedy,James Garfield,and Franklin Roosevelt.

All of them died while they were Presidents. Roosevelt died of natural causes, but the other three were assassinated.

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All of these former Presidents have something tragic in common - they were all assassinated while in office. To find this information, you can use various reliable sources such as history books, encyclopedias, government websites, or reputable online resources about U.S. Presidents and their assassinations. These sources will provide you with detailed information about the assassinations of Abraham Lincoln, John F. Kennedy, James Garfield, and Franklin Roosevelt, along with other relevant historical facts.