The predominant religion in Portugal is Roman Catholicism, with approximately 84% of the population nominally Roman Catholic. While church and state were formally separated in the early 20th century, Roman Catholic precepts still influence Portuguese society and culture. Many holidays and traditions have a religious origin. Agriculture is an important part of Portugal's economy, with the country producing wine, cork, crops and livestock. Portugal's landscape includes the Iberian Peninsula located in southwest Europe, bordered by the Mediterranean Sea, Atlantic Ocean, Pyrenees mountains, and northern coast of Africa.