Most civilised countries already have a < 1 growth rate, which means they'll have populations smaller and smaller as time goes by. So if you want to decrease th

Most civilised countries already have a < 1 growth rate, which means they'll have populations smaller and smaller as time goes by. So if you want to decrease the global population, you'll have to target essentially Africa. Just check the distribution of growth rates across the world: https://en.wikipedia.org/wiki/List_of_countries_by_population_growth_rate https://en.wikipedia.org/wiki/List_of_countries_by_populatio...