The destruction of natural habitat for the development of cities is known as
desertification
suburban sprawl
urbanization
deforestation

That would be deforestation, 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