talking about primitive states,

Hardwick's Marriage Act 1753 UK

Hardwick's Act fixed the lower legal age of marriage as 14 for men and 12 for women. This was raised to 16 for both sexes in 1929, although parental consent was still required for brides or bridegrooms under age 21.

260yrs ago , but only raised to 16 in 1929 some countries have a lot of catching up to do