ocr: The key division in Bahrain is between Sunni and Shi'a Muslims, 30% and70% of the country respectively. The ruling class is Sunni and they hold the bestjobs in business and the bureaucracy. Shi'a Muslims tend to do menial work and have a lower standard of. living. l'ension between the two groups can spill over into violence, particularly during religious festivals. Bahrain has a smaller expatriate population than many other Arab countries. The ruling Al-Rhalifa family has respondedto declining oil reserves by diversifying the economy to provide service industryjobs for Bahrainis. Bahrain is th ...