Controls the chemical environment around neurons in the cns

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.

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.