Suppose someone tells you they saw a bird never before seen in your state. What kind of evidence would you ask for ?

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

Mg is used to measure mass