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1. 1456 – Ottoman–Hungarian wars: The Siege of Nándorfehérvár begins. Nándorfehérvár is now known as which city ?
2. 1776 – The Declaration of Independence is adopted by the Second Continental Congress of which nation ?
3. 1827 – Slavery is abolished in which state ?
4. 1837 – Grand Junction Railway, the world's first long-distance railway, opens between Birmingham and and which other UK city ?
5. 1892 – Which nation changes the International Date Line, causing this day to occur twice ?
6. 1914 – Six days after their assassinations in Sarajevo, the funeral of Archduke Franz Ferdinand and his wife Sophie takes place in which city ?
7. 1934 – Leo Szilard patents the chain-reaction design that would later be used in what weapon ?
8. 1941 – Nazi troops massacre Polish scientists and writers in which captured city ?
9. 1946 – After 381 years of near-continuous colonial rule by various powers, which country attains full independence ?
10. 1950 – Which radio service broadcasts for the first time ?
11. 1987 – Former Gestapo chief Klaus Barbie is convicted of crimes against humanity. What was his nickname ?
12. 1997 – NASA's Pathfinder space probe lands on the surface of which planet ?
13. 2004 – Which country beats Portugal in the UEFA Euro 2004 Final and becomes European Champion for first time in its history ?
14. 2009 – Which landmark reopens to the public after eight years of closure due to security concerns following the September 11 attacks ?
15. 1938 – Bill Withers, American singer-songwriter and producer is born in which tiny US community ?