I got into arguments online with cucks and Christians and liberals on this. I said priority number one for protecting the world environment is a massive program to get birth control to shit poor countries with high birthrates.
I said how you make countries go along with this is you tie huge foreign grant money to them going along. So say we are spending $400 billion a year on this program, the US Empire countries together. And some shit poor country isn't going along - fine they get cut off from the money, and other nations get more. Another country is partially going along.. they get partial grant money.
Many women in like India are in their late 30's, already have kids and don't want more kids. But without birth control they end up pregnant. Also if you think moderately and over a long time, you can have success. Like India going from 2.4 children per woman to 1.8 children per woman makes a gigantic difference over 200 years.
In one case their population would grow by 14% every 30 years. In the other their population would decline by 14% every 30 years.
So if India starts at 1.4 billion, and we make it 210 years so 7 generations..
In the 2.4 children per woman, India's population in 210 years: 3,500 million
In the 1.8 children per woman, India's population in 210 years: 487 million