The graph below compares the rates of reaction of burning candle and an exploding firework

I think the answer is a firework requires less energy to start and occurs more rapidly than the reaction of the candle.

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