science

Yamatai Kyushu Theory

Yamatai Kyushu Theory is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Yamatai Kyushu Theory rather than just read about it. In short: The Yamatai Kyushu Theory is the theory that the Yamatai kingdom was located in Kyushu rather than in Honshu, specifically Kinai (now Kinki region), where the capital was located in the Kofun period, as the Yamatai Honshu Theory proposes. The Honshu Theory is currently the dominant theory, based on archaeological findings.

Key takeaways

Yamatai Kyushu Theory belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Yamatai Kyushu Theory to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Yamatai Kyushu Theory from memory before moving on to harder problems.

Reference excerpt

The Yamatai Kyushu Theory is the theory that the Yamatai kingdom was located in Kyushu rather than in Honshu, specifically Kinai (now Kinki region), where the capital was located in the Kofun period, as the Yamatai Honshu Theory proposes. The Honshu Theory is currently the dominant theory, based on archaeological findings. The Yamatai Kyushu theory instead proposes that the original capital of the Yamatai kingdom of Japan was located in the island of Kyushu, and when the Kofun period began, the Yamato Kingship moved its capital east to the Kinai region, first in the Yamato Province (Nara prefecture), then Kyoto in the Yamashiro Province (Kyoto Prefecture).

Overview

In the Edo period, Arai Hakuseki advocated the "Kinai Yamataikoku theory" which suggests that Yamatai was located in Yamato Province, ie. Nara prefecture (大和) in the Kinai, Honshu. Later, Arai advocated a different theory, the "Kyūshū Yamataikoku theory" which says Yamatai-koku was located in "Yamato county (山門-郡, Yamato-gun)" in Chikugo Province (Fukuoka prefecture, Northern Kyushu) in his book "Foreign Affairs Chronicle". Since then, the mainstream of academic circles has been divided into two major theories:

the "Honshu theory" (supported by Naitō Torajirō et al.) holds that Yamatai-koku was located in Honshu. According to this theory, the Yamatai-koku was essentially continuous with the Yamato Kingship, with its capital in roughly the same region, and the Yamatai-koku transformed into the Yamato Kingship when the Kofun period began. the "Kyushu theory" (supported by Shiratori Kurakichi et al.) holds that Yamatai-koku was located in Kyushu. The Kyūshū theory has itself been divided into two schools. One school insists the "Kyushu Yamatai-koku" moved to the East and became the Imperial House of Japan. The other school insists the "Kyushu Yamatai-koku" did not move, and was conquered by the forced of the Yamato (based in Kinai). Masao Kume proposed the Two dynasties parallel theory (二王朝並立論) which states that the "Queen's Country" (女王国) of "more than 2,000 miles from the [Daifang] Commandery to the "Queen's Country"" (自郡至女王国萬二千餘里) is different from the Yamatai Kingdom (邪馬台国) of Thirty days by sea (海路三十日) (20 days of water travel south to Toumakoku (南至投馬国水行二十日) and Ten days of water travel south to the land of Yamatai (南至邪馬台国水行十日) and the "Queen's country" in Tsukushi moved to Kinai after the "Civil War of Wa (倭国大乱)". It is assumed that the new royal capital, which was the capital of Japan, is Yamatai.

Evidence for the Honshu Theory In the 1960s, it was thought that artifacts from the period of the Yamataikoku were abundant in Kyushu while those from the Kinai region were scarce in the Kinai region. The National Institute for Radiocarbon Dating and Dendrochronology has presented a chronology based on radiocarbon dating and dendrochronology that compares the tombs of Himiko and the Yamato imperial court to those of Yamatai and Himiko, and that the establishment of the Yamato Imperial Court dates back to that time. Some have suggested that radiocarbon dating of pottery from the Kinai region by the National Institute of Japanese Archaeology and Dating suggests that the establishment of the early state in the Yamato region of the Kinai region dates back to the same period as the Yamataikoku.。. According to this Kinai theory, there was at least one power in 3rd century Japan that was able to secure transportation routes from Yamato to the continent, and it can be said that a power with great influence over the entire of western Japan centering on Yamato, namely the "Yamato Kingdom," was already established at this time.The Makimuku ruins site is considered by some researchers to be the best candidate for the center of the Yamatai, and may be the site that proves the Yamatai Honshu Theory. In 2011, a part of another large building was found about 5 meters to the east of the large building ruins, and the building ruins may have been built in the late 3rd century or later.

The Hashihaka kofun ( 箸墓古墳（はしはかこふん）) is a megalithic tomb (kofun) located in Sakurai City, Nara Prefecture, Japan. The Hashihaka kofun is considered to be the first large keyhole-shaped kofun constructed in Japan and is associated with the emergence of the Yamato Kingship. It is sometimes considered the birthplace of the Kofun system of tombs which is highly linked to the emergence of a state level society.

Basic rationale for the Kyushu Theory The basic arguments for the Kyushu theory of the Yamatai Kingdom include the following.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Yamatai Kyushu Theory

Start with the simplest possible case. Write down what Yamatai Kyushu Theory claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Yamatai Kyushu Theory before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Yamatai Kyushu Theory ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Yamatai Kyushu Theory

In research: Yamatai Kyushu Theory appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Yamatai Kyushu Theory in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Yamatai Kyushu Theory is common in secondary-school and first-year university syllabi. It links to neighbouring topics Historical hypotheses, Kyushu region, Yamatai, so understanding it makes those chapters shorter.
In everyday life: Look for Yamatai Kyushu Theory outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Yamatai Kyushu Theory in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Yamatai Kyushu Theory means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Yamatai Kyushu Theory out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Yamatai Kyushu Theory in simple terms?

Why does Yamatai Kyushu Theory matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Yamatai Kyushu Theory?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Yamatai Kyushu Theory.