Tribalism (noun)

A strong loyalty or sense of identity felt by people towards their own tribe or social group, often accompanied by a strong hostility to outsiders.

Origin:

Derived from the word "tribal" which means related to a tribe or tribes.

Examples:

1. The conflict was rooted in tribalism, with different ethnic groups fighting for control.
2. The politicians used tribalism to gain support from their constituents.
3. Tribalism was the main cause of division and violence in the region.
4. Tribalism was a factor in the decision-making process of the traditional council.
5. Tribalism was a major obstacle to achieving peace and unity in the country.