Reflection: When did mothers started to go to OB/GYNS?

Assalamua'laikum
I'm sitting here doing my AMANI review, reading chapter 3 of the Birth Book, a chapter on choices in childbirth. Basically about choosing medical birth attendants, a birth place, and a childbirth class.

I read the Sears' definition on obstetrics (concentration on complicated pregnancies and deliveries) and my mind starts to wander...

Does Malaysia -or the world for that matter- still have the statistics that 90 % of births have no complication and only 10% require necessary medical intervention?

When did mothers -the world over- started to go to OB/GYNs rather than midwives?

I wonder...it says in the Birth Book that mothers in Europe started to go to OB/GYNs at around 1920s to get emancipated from the "curse of childbirth" via the concoction of twilight sleep.

1920s? My grandfather would be 20 at that time. Malaysia, 1920...what was it like? What was birthing in Malaysia like, in 1920?

If the job of the OB/GYN was to stand by for the complicated births ONLY - what set the trend that changed it forever?

For me - since I "had" the option, and I was with Tarbiyyah, I was just "led" to Dr Lenny and Dr Siti Maryam, and at the time all that I understood was, this is the best for me. That the public/government hospital was not the best option because I just "knew" no such choice was available there.

So many questions in my mind...