Ethnocentric (adjective)

1. Having or showing the attitude that one's own culture or group is superior to all others.
2. Judging other cultures solely by the values and standards of one's own culture.

Origin:

From the greek words ethnos meaning "people, nation" and kentrikos meaning "of or relating to the center".

Examples:

1. The ethnocentric attitude of the colonizers towards the indigenous people led to the oppression and exploitation of the latter.
2. He had an ethnocentric view of the world, believing that his culture was superior to all others.
3. Her ethnocentric perspective prevented her from understanding the customs and beliefs of other cultures.
4. The ethnocentric attitude of the company made it difficult for them to expand globally.
5. His ethnocentric views led him to believe that Western medicine was the only valid form of treatment.