They spread Islam throughout the region, establishing it as the dominant religion.

The constitution included a clause that formally established the Bulgarian Orthodox Church as the official religion of the nation.

Towards the end of the 4th century Theodosius worked to establish Catholicism as the privileged religion in the Roman Empire.

Although both the federal and state constitutions established the Catholic Church as the official religion, the frontier areas often disobeyed the rule.

With the restoration of the monarchy, Fox's dreams of establishing the Friends as the dominant religion seemed at an end.

The new Mexican constitution was similar to that of the United States, with the major exception that it established Catholicism as the national religion.

At the peak of the Middle Ages, around the year 1200, Christianity was more or less solidly established as the religion of Europe.

Islam was established as the dominant religion in the Indonesian archipelago by the 16th century.

In Maryland, Anglicanism was established as the official religion from 1702.

The Puritans, or Pilgrims, left England so that they could live in an area with Puritanism established as the exclusive civic religion.