For July 7:

1585 – The Treaty of Nemours was first signed, forcing Henry III of France (pictured) to give in to the demands of the Catholic League and revoking all edicts granting concessions to the Huguenots.
1798 – The Quasi-War, an undeclared war fought entirely at sea, began after the United States rescinded their treaties with France.
1807 – Tsar Alexander I of Russia and Napoleon I of France signed the first agreement of the Treaties of Tilsit, ending the War of the Fourth Coalition.
1928 – The Chillicothe Baking Company in Chillicothe, Missouri, USA, first produced sliced bread, advertised as "the greatest forward step in the baking industry since bread was wrapped", which then led to the popular phrase "the greatest thing since sliced bread".
1937 – The Imperial Japanese Army defeated the Republic of China's National Revolutionary Army on Beijing's Marco Polo Bridge, marking the beginning of the Second Sino-Japanese War.
2005 - 4 suicide bombs go off in London, killing 52 innocent people

The Quasi War is interesting - never heard of it before - it was fought entirely at sea

The Sino- Japanese war is truely the forgotten conflict of WW2 - enormous casualties, horrendious war crimes and truely world changing consequences - yet it is hardly mentioned here in the West