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Catholicism is a broad term. it is not region. It is a religious religion .
There is no single religion in the southwest desert region of the United States. However, due to the high concentration of Hispanics in the region, Catholicism would be the predominate religion.
Dominant religion--Islam. Dominant language--Arabic and French.
Chechnya is located in the North Caucuses and its dominant region is Grozny, which also serves as the capitol. The dominant religion of the republic is Islam.
Judaism is the dominant religion in only one country in the world: Israel.
The power and reach if the roman Empire Brought The Christian/Catholicism to the region
All throughout Latin America. Roman Catholicism account for 70-90% of the region's religion.
Under the Spanish, Roman Catholicism was the official religion, and it was strengthened by French immigration during the French and Haitian revolutions.
The Amazonian region (or the Oriente), the Andes region (or the Sierra), the coastal region (or the Costa), and the insular (or Galapagos) region.
Catholicism was the official religion of France before the nation of France was even formally recognized as a nation. It has been the official religion of this region since the Baptism of Clovis in A.D. 496 gave birth to France. You may be thinking of the Edict of Nantes by Henry IV in 1598 which first recognized protestants as something more than just another heresy, but named Catholicism as the official religion of France recognized a reality of more than a millennium at that point.
predominantly Roman Catholicism
During the Age of Exploration, most of Latin America was conquered by the Spanish and Portuguese empires, which had Roman Catholicism as the state religion. This resulted in most of the continent having Roman Catholicism adopted or imposed to the local peoples of the region.