This document discusses the role of obstetricians and how childbirth has changed over time. It notes that obstetricians provide important prenatal care like nutrition guidance and help with delivery. They also perform tests and exams throughout pregnancy. Childbirth methods have evolved significantly with modern equipment and medical knowledge compared to ancient times. Cesarean sections were once rare but are now more common when needed. Care of newborns has also changed with practices like the Apgar test and premature baby care. Midwives also support the delivery process and require educational training.