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
Asia-Africa Growth Corridor economic efficiency and durability, inclusiveness, safety and disaster-resilience, sustainability as well as convenience and amenities; and (e) contribution to the local society and economy. Asia-Africa Growth Corridor The Asia-Africa Growth Corridor or AAGC is an economic cooperation agreement between the governments of India, Japan and multiple African countries. India on 25 May 2017 launched a vision document for Asia-Africa Growth Corridor or AAGC at the African Development Bank meeting in Gujarat. The Research and Information System for Developing Countries (RIS), New Delhi, the Economic Research Institute for ASEAN and East Asia (ERIA), Jakarta, and Institute of Developing Economies (IDE-JETRO), Tokyo,