Final answer:
The term 'Kula White Armshells' seems to be a misnomer, possibly referring to the Cycladic figurines of the Greek Bronze Age. Trade routes and travel directions mentioned historically include sailing from Japan to Korea and the use of intermediary stops like Kaya for trading and rituals. The Cyclades are known for their extensive use of white marble in art and architecture.
Step-by-step explanation:
The term Kula White Armshells does not directly refer to any known historical artifacts but might be confused with the Cycladic figurines made of white marble during the Greek Bronze Age. These figurines are characterized by their folded-arm position; however, the term 'Kula White Armshells' seems to be a typographical error or confusion with another cultural term. In terms of the direction around the islands certain objects traveled, information is provided from several historical contexts. The Wa chiefs from Japan were connected via trade routes to the Korean peninsula, implying movement of goods and cultural artifacts across these waters. Also, the Cyclades were known for their white marble, and the natural resource was extensively used by the Aegeans for carving statues and building structures.
Trading routes mentioned include voyages from the northern coast of Kyushu in Japan to Pusan in Korea and onward, involving intermediary stops such as Kaya. Such routes were essential for the movement of people, goods, and cultural practices like the worship rituals mentioned. It is also clear that maritime travel was dangerous due to rocky coastlines and swirling currents, which influenced how far and long sailors could journey.
Regarding the purported islands in the question, and the directions involved, there are historical references to sailors navigating through dangerous coastlines with varying ports of call in their travels, which pertains to the description of the trading and travel activities in the ancient world.