A westernized country, place, or person has adopted ideas and behaviour typical of Europe and North America, rather than preserving the ideas and behaviour that are traditional in their culture.
...the influence of westernized forms of Hinduism.
We must stop our country becoming Westernized.
westernized in British English
or westernised (ˈwɛstənaɪzd)
adjective
having been influenced or made familiar with the customs, practices, etc of the West