population: 4,470,700 economy: Market Economy relations with the US: diplomatic language: Irish, English religion: Christianity, Roman Catholicism, Protestantism. traditions and customs: Blessings, traditional sayings, Spring cleaning, "All-Saints Day", Potatoes used in food. natural resources: natural gas, petroleum, peat, copper, lead, dolomite, barite, limestone, gypsum, silver, zinc. government: Constitutional republic Parliamentary democracy. famous people: Kevin Roche, Kate Fahy, Liam Neeson, Big Tom, Mark Geary, Dennis O'Driscoll.