Because two cultures are so different they cannot assimiliate. or they are ethnocentric and will not.
Mankind has always lived with differences of opinion. Conflict is a natural part of the human condition.
"Global culture", meaning a culture interconnected worldwide? "A culture of conflict", meaning a culture that is in conflict with itself? I think the statement makes sense, as human nature has always been in conflict with itself, which leads to tension and confusion in all areas of human culture (apparently).
Primary culture conflict theory emphasizes conflicts between different cultures, often due to differing values, beliefs, and practices. Secondary culture conflict theory focuses on conflicts within a single culture that arise due to internal divisions, such as generational, socioeconomic, or ideological differences.
I really don't know
Cosmic Conflict happened in 1978.
Bicholim conflict happened in 1640.
Caprivi conflict happened in 1998.
Beagle conflict happened in 1978.
The P'Radikus Conflict happened in 1990.
Papua conflict happened in 1963.
Casamance conflict happened in 1982.
Darklight Conflict happened in 1997.
Sampit conflict happened in 2001.