Stop calling women "females", you blithering male.
In civilized first-world societies, a woman dying of childbirth is a complete chock, a rare, almost unheard-of, phenomenon.
In your "tribal" societies, it's apparently fine and dandy as long as "most of them" survives. What is "most of them", btw? 51 percent?
As to "don't have any complications"; studies in Sweden show that 50-60 percent of all ADULT women giving birth vaginally have medium-rate ruptures. Medium-rate is between sphincter ruptures and tiny cuts. Sweden, if you don't know about it, Jonny-boy, is a civilized first-world society, with universal healthcare. Untreated medium ruptures often lead to having to put a finger in the vagina and press on the back wall, in order to be able to poo. If that is "not having any complications" to you, you're an idiot. (Why they are untreated? Because little or no research has been done in this area. It only concerns "females" after all, so who cares, right? No-one asks how the women are doing, and they are told that everything will go back to normal if they just do their pelvic floor exercises properly. So, surprise surprise, women are made to blame themselves, if things don't work "down there".)
You know what parts of the body need to be fully developed, in order to be able to give birth, troglodyte? The hips and the pelvis. If they are not developed enough, the growing fetus will expand until the body carrying it breaks open like a hatching egg. Imagine having a catheter in your urethra, pumping in water until your bladder explodes...