This American birthday gift may have gone down in history as one of the sweetest gestures of international appreciation over the country’s independence. On Thursday, the Library of Congress’s website published the entirety of a Polish birthday card that was given to the United States on the 150th anniversary of when America claimed independence. style=”display:inline-block;width:300px;height:250px” data-ad-client=”ca-pub-8420654331411867″…