What can we do to decrease birth rates and why is it important to do so?

Birth rates are higher in LEDCs or LICs and the people becoming pregnant are at younger ages. A way to decrease birth rates is to teach people about contraceptive methods. This also means less disease is spread.
Hope this helps

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey