well they're newer than Television if you're talking about effective birth control and family planning. And I mean effectiveness has risen since the first invention of the pill to where you really can control and plan things pretty well.
And Family Planning is as old as old as the Hills if you're talking about marriage as a technology to provide a stable household for children
well I mean that is not normally what one is talking about when using the phrase family planning in the modern era.
Yes and No. There is "family planning" as a euphemism for contraception and abortion, but there is also a long history of using the term in a literal sense that includes financial planning, counseling, ect.
Hence, "Birth control and family planning"
Oh come on. That's 50 years ago, and I hope you know people who lived before then in your family.
Sex is still the primary reason for having a child today just as it was 50 years ago lol.