Sea in culture of barbarian invaders and knowledge of geography took a backward step. In the seventh century, Isidore of Seville produced a "wheel map" in which Asia, Africa and Europe were arranged like segments in an orange, separated by the "Mare Mediterranean", "Nilus" and "Tanais" and surrounded by "Oceanus". It was not until the fifteenth century that Ptolemy's maps were used again and Henry the Navigator of Portugal initiated ocean exploration and maritime research. Encouraged by him, Portuguese navigators explored, mapped and charted the west coast of Africa and the Eastern Atlantic and this knowledge prepared the way for the great voyages
Catholic Church in Europe Italians, Poles, Portuguese, and Spaniards) to continents such as the Americas and Australia. Furthermore, Catholicism has been spread outside Europe through both historical Catholic missionary activity, especially in Latin America, and the past colonization and conversion of native people by Catholic European countries, specifically the Spanish, Portuguese, French and Belgian colonial empire, in regions such as South America, the Caribbean, Central Africa and West Africa, and Southeast Asia. As the Vatican State is a theocracy, it cannot become a member of the European Union. However, traditionally there are very strong ties of the Holy See with the neighbor country of