Progress prompted by the late 3rd millennium BC includes better development of the 18th century and 19th century. The history of France now includes mention of the French Revolution. I have been concentrating more on the connection and development of cities, but this was an important milestone.

I have been using Wikipedia as  source, but I am not entirely happy with it.  It is weak on the recording of recent events. However, many of the most recent events require some background to understand them, so I am trying to balance recent coverage with historical background.