from wikip:

“The Hajnal line links Saint Petersburg, Russia and Trieste, Italy. In 1965, John Hajnal discovered it divides Europe into two areas characterized by a different levels of nuptiality.

West of this line, the average age of women at first marriage was 24 or more, men 26, spouses were relatively close in age, and 10% or more of adults never married. East of the line, the mean age of both sexes at marriage was earlier, spousal age disparity was greater and marriage more nearly universal. Subsequent research has amply confirmed Hajnal’s continental divide, and what has come to be known as the ‘Western European marriage pattern’, although historical demographers have also noted that there are significant variations within the region….”

here it is. the caption on wikipedia reads: “The line in red is Hajnal’s. The dark blue lines show areas of high nuptiality West of the Hajnal line.”

so, basically, we’re talking about germanic peoples (west of the line).

michael mitterauer offers several explanations for the characteristics of marriage east of the line including:

“e) Influences of the church

As a rule, Christianity helped to weaken bonds of lineage and descent and strengthen the relations between spouses everywhere. Not everywhere, however, did these principles succeed to the same extent. The penetration of principles of church marriage laws was generally stronger in the area of the Western than in that of the eastern church. Also corporative and communal social forms supported by the church were stronger in the West. Consequently, patrilinear kinship structures were less affected in the area of the orthodox church than in the West. In the long run, however, also in the East Christian principles worked against structures of lineage and descent. Patrilinear patterns totally in contradiction to church marriage law, such as levirate marriages or second marriage in case of a childless first marriage, were maintained in areas of weak church influence in eastern and southeastern Europe.”

from “Whatever Happened to Hajnal’s Line”:

“Interestingly enough, Hajnal’s line followed quite closely the Iron Curtain, then dividing Europe into capitalist and socialist societies.”

this is one of emmanuel todd’s major points in “The Explanation of Ideology” — i.e. that almost all of the nations that became communist in the 20th century had a particular family structure based, amongst other things, on strong, patrilineal lineages. (i’m gonna write up a post on his book — soon. i promise!) i pointed out what looked like a connection between slavs and ex-communist countries here.

also from wikip:

The region’s late marriage pattern has received considerable scholarly attention in part because it appears to be unique; it has not been found in any other part of the world prior to the Twentieth Century. The origins of the late marriage system are a matter of conjecture prior to the 16th Century when the demographic evidence from family reconstitution studies makes the prevalence of the pattern clear….

interestingly, tacitus wrote about late marriage practices amongst the german tribes. it’s hard to tell, tho, if he was working from accurate information, or just reproaching his fellow romans for their morally loose marriage practices. here, from jack goody [pg. 39]:

“Marriages are not made early, for ‘the young men are slow to mate, and their powers, therefore, are never exhausted. The girls, too, are not hurried into marriage’. Was the ‘European pattern’ of late marriage (Hajnal 1965) already in evidence or was this too a figment of Tacitus’ moralising?”

in any case, delayed marriage for westerners (esp. western westerners) is not a new-fangled thing.

(note: comments do not require an email. or any map-folding skillz.)

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