Thanks for this well documented text.
Two remarks though:
>In the Middle Ages, when the life expectancy was still significantly lower, the puberty began later than today and adolescents in the age range 12-18 years were set up for marriage.
It applies to antiquity too. Romans used to have a low age of marriage for females (typical age was 14-15, and minimal age was usually 12).
And there was no minimum age to get engaged.
>Japan where the age limit in some places is 13 years (the same applies in Spain)
AoC was 12yo in Spain for decades. Even Franco had no problem with that, it was only in the recent years that some cucked Spanish government had to rise the AoC to 16 due to "international" pressure.