Over the past 200 years what science technology or modern medicine techniques do you think have improved life expectancy and public health in general

Are there answer choices or is this an open statement, in an open statement case it would be the ability to control disease spread, More vaccines, and better ways to test for sickness.

10/10 recommend bring pads/tampons with you no matter what. im 16 & i’ve had mine since i was 12 and they’re still it regular, but id suggest using the glow app, many women use it for fertility reasons but i use mine specifically for the period tracking portion and it guesses when your next period will most likely be for the next two months. i dont believe theres any way to delay your period, so id say hope for the best but make sure to bring all of your stuff just incase. have a good cruise!