The main cause of cultural conflict between Great Britain and Ireland has been religious differences.
The conflict between Great Britain and Ireland has a long and complex history, but one of the main factors that has contributed to the conflict is the religious divide between the Protestant and Catholic communities.
In Northern Ireland, which is part of the United Kingdom, Protestants have historically held political and economic power, while Catholics have faced discrimination and marginalization. This has led to a long-standing conflict between the two communities, with violence and political unrest erupting at various times throughout the 20th century.
While there are other factors that have contributed to the cultural conflict between Great Britain and Ireland, such as language and economic differences, religious differences have been a primary driver of the conflict.