The Republic of Ireland is a European country located on the island of Ireland in the North Sea, and is also comprised of the islands of Manx, the Faeroes, and control the North Islands of the Shetland archipelago jointly with the Kingdom of Scotland. The capital of Ireland is Dublin, on the island's eastern coast, and its other major cities include Cork, Belfast, Limerick, and Ulster. Ireland is predominantly Roman Catholic, although a nominal Protestant minority exists in the north in Ulster and around Belfast, and the Muslim minority has grown in recent years due to immigration. The primary language is English, although native Irish (a Gaelic dialect) is used often.