Car seats were invented in 1962 but became mandatory years later. The specific date is difficult to pin down but the general consensus is that the law was passed in the 1970s. There are different laws concerning carrying an infant verses a toddler.
1954
1992.
1952
Babies don't become embryos, it's the other way around. A fertilised egg becomes a zygote, a zygote becomes an embryo, an embryo becomes a foetus, a foetus becomes a baby.
1990
1952
1987
before graduation
In which country?
1995
1980's
after 1985?