Delaware is whack, but historically age 12-15 was a reasonable (for the time) age for girls to marry. Most biblical scholars say that Mary (JC’s mother) was about 15/16 when she popped him out (assuming there is some historical fact in the story) so those ages in your country weren’t completely crazy outliers. People grew up quicker back then because people died sooner back then. Just getting to the age of 12 was an accomplishment in its self. The past was a different place. If humanity makes it a few more generations then some of the things we accept and do now will be seen as unacceptable. We are all products, to a greater or lesser degree, of the time we live in and that shapes how we see the world as it is and as it has been.