Complex sentence: At the time of the revolution in Iran, there were probably some 80,000 Jews in the country a recognised minority along with Christians and Zoroastrians, which in general had suffered no persecution and had been able to continue its affairs undisturbed.
Split into simpler sentences: At the time of the revolution in Iran, there were 80,000 Jews in the country. They were a recognised minority along with Christians and Zoroastrians, which in general had suffered no persecution and had been able to continue its affairs undisturbed.