How can we solve water pollution?

Well we could start by having like a event for picking up trash in the water, plus we could add filters to the water, and finally we could stop littering.

Stop allowing chemical runoff from factories and farms to enter the oceans

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