Heliopolis (ancient Egypt) from him the true length of the year and month, upon which he formed his octaeterid, or period of 8 years or 99 months. Ptolemy II had Manetho, the chief priest of Heliopolis, collect his history of the ancient kings of Egypt from its archives. The later Ptolemies probably took little interest in their "father" Ra, and Alexandria had eclipsed the learning of Heliopolis; thus with the withdrawal of royal favour Heliopolis quickly dwindled, and the students of native lore deserted it for other temples supported by a wealthy population of pious citizens. By the 1st century BC, in fact,
Economy of ancient Tamil country a large amount of internationally convertible Roman currency. The state played an important role in building and maintaining infrastructure such as roads and ports—funded through taxation—to meet the needs of economic and social activity. Wealth was unequally divided among the people, giving rise to distinct economic classes. Agriculture was the main occupation of the ancient Tamils and the most respected. Farmers were aware of different soil types, the best crops to grow and the various irrigation systems suitable for any given region. In the five geographical divisions of the Tamil country in Sangam literature, the Marutam region was the most