A few Brits on Twitter congratulated us on our 250th birthday as a nation by reminding us that this Sunday they will celebrate the 1,099th anniversary of their nationhood. Well, cheers to them as well. On July 12, 927, King Æthelstan, grandson of Alfred the Great, and the kings of Scotland, Deheubarth (Wales), Strathclyde and northern Northumbria met at Eamont Bridge near Penrith in Cumbria and agreed to form the Kingdom of England with Æthelstan as the king.