In Europe and Africa there were more male - male competition and fighting which selected for more dominant males while Asia the males were more docile

[MongoloidJoe]

Male male competition in animals leads to more sexually dimorphic males and women are more hypergamous and want stronger genes for their offspring

In Europe and Africa there was much of this.

But in Asia people are less aggressive (lower crime rates, less chimping out), and social harmony is prioritised. So that led to less dominant sexually dimorphic males and thus is why their SMV is lower than that of European and African males.

 

[Tabula Rasa]

Different eco-systems

 

[Asgard]

Europeans aren't that aggressive unlike those who come from MENA (who tend to come from dysfunctional, father absent families) and Sub-Saharan Africa (perhaps genetics play some factor here in the case for black people). Unfortunately, crime rates in Europe are skyrocketing mainly due to... "refugees": most prisons in the continent are overcrowded with non-natives.

 

[MongoloidJoe]

Europeans aren't that aggressive unlike those who come from MENA (who tend to come from dysfunctional, father absent families) and Sub-Saharan Africa (perhaps genetics play some factor here in the case for black people). Unfortunately, crime rates in Europe are skyrocketing mainly due to... "refugees": most prisons in the continent are overcrowded with non-natives.

They were historically aggressive in terms of world wars and Spanish inquisition of native americans