>>63901514
Same reason why African militaries are so weak and can have warlords rule half of a country with 300 guys and AKs.
>society is based around tribes and has been as far back as you can look
>these tribes hates eachothers guts or at the very best dislike eachother
>the most powerful tribe within a nation takes power through military force
>in order to stay in power, this tribe trains and arms its own members to form a form of "royal guard" whose sole purpose is to protect the ruling tribes claim to power
>due to the hundreds of different tribes spanning a nation the ruling tribe is almost always a tiny minority
>due to being a minority there isn't enough fighting age men available to train to create a fully functional military, just enough to protect the ruling tribe
>as no military can be formed they can't amass enough manpower to invade neighbouring nations even though they have no defenses
>this enormous power vacuum outside the major cities allow warlords and gangs to take over hundreds of square kms
>when a nation actually wants to invade someone they are going to have to conscript other tribes who are usually given minimal training as to be able to somehwat perform but not be able to stage a coup
>these conscripts dislike the ruling tribe and thus have no morale to fight and even overthrow the gouverment after a conflict is ended even in a victory
>repeat
None of this is a lie or an overexageration. We all like to go "hurr durr tribal monkey niggers" here, but this is unironically how their societies function.