When was the Kingdom of England established?
Correct answer: About 925

Emine
It should be 927 AD.

That Cøunt, Ray Bumpkin
Another well written explanation but, as Emine said, it should be 927 AD when Aethelstan brought the unification of the Angles, Saxons and Danes. (My keyboard doesn't let me type the AE ligature and also wanted the Angles, Saxons and Daves to unite).

Anne
Ireland didn't join. England invaded and took it over.