Explore Osaka
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Osaka is a designated city in the Kansai region of Japan. It is the capital city of Osaka Prefecture and the largest component of the Keihanshin Metropolitan Area, the second largest metropolitan area in Japan and among the largest in the world, Situated at the mouth of the Yodo River on Osaka Bay, Osaka is the second largest city in Japan. Historically a merchant city, Osaka has also been known as the "nation's kitchen" and served as a center for the rice trade during the Edo period. Some of the earliest signs of human habitation in the Osaka area at the Morinomiya ruins (Morinomiya iseki) comprise shell mounds, sea oysters and buried human skeletons from the 6th–5th centuries BC. It is believed that what is today the Uehonmachi area consisted of a peninsular land with an inland sea in the east. During the Yayoi period, permanent habitation on the plains grew as rice farming became popular. By the Kofun period, Osaka developed into a hub port connecting the region to the western part of Japan. The large numbers of increasingly larger tomb mounds found in the plains of Osaka are seen as evidence of political-power concentration, leading to the formation of a state.