China fact of the day
Qing Dynasty measured some 14.7 million square kilometers in 1790…The two biggest countries in western Europe were under 0.7 million in the late eighteenth century.
That is from Philip T. Hoffman’s new and interesting Why Did Europe Conquer the World?, here is the book’s home page. Hoffman does note, however, that if we count empires the Spanish empire was during that time larger than China.