The four major islands of Japan are Honshu, Hokkaido, Kyusha, and Shikoku. The island of Honshu is referred to as the mainland because it is the largest. Edit
When and why was the IWC formed? The IWC, which stands for the International Whaling Commission, was formed on December 2nd, 1946 in order to âprovide for the proper conservation of whale stocks and thus make possible the orderly development of the whaling industryâ (http://iwc.int/history-and-purpose)
OPEC, the Organization of the Petroleum Exporting Countries is an international organization. Since 1965, the headquarters of OPEC is in Vienna, Austria. OPEC was established in Baghdad, Iraq on 10â14 September 1960. Its work is to coordinate and unify the petroleum policies of its members.