They weren't actually a secret, but America just never bothered to bring up the fact that he had fifty children. Naturally, it was bound to come out sooner or later that the states were personified; America just wishes it could've happened with fewer death threats. The nations won't know what hit them. And, in the process, other secrets from America's past are brought to light.

Born as a member of the Teutonic Order in 1192, told he isn't human in 1211. Prussia's life has been a search for the truth from the start. Finding yourself is never easy, especially if it's the person you least want to be. *Part 3 of Historical Hetalia, part 1 of Prussian/German history*