1841, shortened form of advertisement. Long resisted by those in the trade, and according to Mencken (1945) denounced by William C. D'Arcy (president of Associated Advertising Clubs of the World) as "the language of bootblacks, ... beneath the dignity of men of the advertising profession."
1. He's probably narked because he didn't see the ad himself.
2. The Roman Empire was divided in the fourth century AD.
3. The cathedral was destroyed by the Great Fire of 1136 AD.
4. The original castle was probably built about AD 860.
5. He's good at ad-libbing his way out of trouble.