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.
1952
1954
1992.
1952
1990
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.
In which country?
before graduation
1980's
1987
after 1985?
1984