Yayoi period
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The Yayoi period (弥生時代, Yayoi jidai) (c. 300 BC – 300 AD) is one of the major historical periods of the Japanese archipelago. It is generally defined as the era between the beginning of food production in Japan and the emergence of keyhole-shaped burial mounds (前方後円墳, zenpō-kōen-fun). Chronologically, it spans from around the 10th century BCE or 9th–8th century BCE to the mid-3rd century CE.
Following the Jōmon period, which was characterized by a hunter-gatherer economy, the Yayoi period marked the transition to a productive economy based on wet-rice agriculture. In the latter half of the late Yayoi period (around the 1st century CE), large regional powers emerged throughout western Japan, including the Tokai and Hokuriku regions. By the end of the 2nd century, the political entity known as Wa-koku (倭国) had formed. It is generally considered that the Yayoi period transitioned into the Kofun period around the mid-3rd century, although the precise starting point of the Kofun period remains debated among scholars.
The name “Yayoi” was given in the 19th century by archaeologists, after artifacts and remains characteristic of this period were discovered in the Yayoi district of Tokyo. The most distinctive features of the Yayoi period are the emergence of a new style of pottery and the beginning of intensive rice cultivation in paddy fields. Yayoi pottery is more utilitarian and simpler in design compared to the decorative and intricate Jōmon pottery. With the advent of rice farming, people began to settle in one place for extended periods. Metallurgical techniques based on bronze and iron were introduced, and the inhabitants began to weave hemp, and to live in raised-floor dwellings with thatched roofs.
From an archaeological perspective, the term "Yayoi people" refers collectively to agricultural migrants from the Korean Peninsula and regions to the south, such as the South Pacific, who arrived during the Yayoi period. It does not denote a single ethnic group. These migrants gradually assimilated with the indigenous Jōmon population, forming the foundation of the modern Japanese people.
The degree of Yayoi cultural influence varied by region: Kyushu, Okinawa, and the Tōhoku region retained stronger Jōmon traits, while Kansai and Shikoku exhibited more pronounced Yayoi characteristics.