Executive power is instead wielded by the prime minister and the Cabinet, whose sovereignty is vested in the Japanese people. In 2020, the government of Japan announced a target of carbon-neutrality by 2050. Japan ranks 20th in the 2018 Environmental Performance Index, which measures a country’s commitment to environmental sustainability. Responding to rising concerns, the government introduced environmental protection laws in 1970. Japan has nine forest ecoregions which reflect the climate and geography of the islands.

Government and politics

Go-Daigo was defeated by Ashikaga Takauji in 1336, beginning the Muromachi period (1336–1573). After Yoritomo’s death, the Hōjō clan came to power as regents for the shōgun. Japan’s feudal era was characterized by the emergence and dominance of a ruling class of warriors, the samurai.

Language

Murasaki Shikibu’s The Tale of Genji and the lyrics of Japan’s national anthem “Kimigayo” were written during this time. This marked the beginning of the Heian period (794–1185), during which a distinctly indigenous Japanese culture emerged. A smallpox epidemic in 735–737 is believed to have killed as much as one-third of Japan’s population. The period is characterized by the appearance of a nascent literary culture with the completion of the Kojiki (712) and Nihon Shoki (720), as well as the development of Buddhist-inspired artwork and architecture.

Health

• The Ryukyu and Nanpō Islands have a subtropical climate, with warm winters and hot summers.
• Throughout the latest century, Western customs originally related to Christianity, including Western style weddings, Valentine’s Day and Christmas, have become popular as secular customs among many Japanese.
• Japanese animated films and television series, known as anime, were largely influenced by Japanese manga and have become highly popular globally.
• Destructive earthquakes, often resulting in tsunami, occur several times each century; the 1923 Tokyo earthquake killed over 140,000 people.
• Since 1981, the principal cause of death in Japan is cancer, which accounted for 27% of the total deaths in 2018—followed by cardiovascular diseases, which led to 15% of the deaths.
• The Yayoi period saw the introduction of innovative practices including wet-rice farming, a new style of pottery, and metallurgy from China and Korea.
• In 2011, Japan suffered one of the largest earthquakes in its recorded history—the Tōhoku earthquake—triggering the Fukushima Daiichi nuclear disaster.

The Jinshin War of 672, a bloody conflict between Prince Ōama and his nephew Prince Ōtomo, became a major catalyst for further administrative reforms. It nationalized all land in Japan, to be distributed equally among cultivators, and ordered the compilation of a household registry as the basis for a new system of taxation. Despite early resistance, Buddhism was promoted by the ruling class, including figures like Prince Shōtoku, and gained widespread acceptance beginning in the Asuka period (592–710). A century later, the Book of Wei records that the kingdom of Yamatai (which may refer to Yamato) unified most of these kingdoms. The Yayoi period saw the introduction of innovative practices including wet-rice farming, a new style of pottery, and metallurgy from China and Korea. Clay vessels from the period are among the oldest surviving examples of pottery.
In 1936, Japan signed the Anti-Comintern Pact with Nazi Germany; the 1940 Tripartite Pact made it one of the Axis powers. This process accelerated in the 1930s, spawning several radical nationalist groups that shared a hostility to liberal democracy and a dedication to expansion in Asia. The Japanese population doubled from 35 million in 1873 to 70 million by 1935, with a significant shift to urbanization. Adopting Western political, judicial, and military institutions, the Cabinet organized the Privy Council, introduced the Meiji Constitution (November 29, 1890), and assembled the Imperial Diet.

Japan

As a growing number of younger Japanese are not marrying or remaining childless, Japan’s population is expected to drop to around 88 million by 2065. As of 2025update, over 29.3% of the population is over 65, or more than one in four out of the Japanese population. The country has therefore aimed to diversify its sources and maintain high levels of energy efficiency. The Sendai Nuclear Power Plant restarted in 2015, and since then several other nuclear power plants have been restarted.

• From the 12th century, actual power was held by military aristocrats known as shōgun and feudal lords called daimyō, enforced by warrior nobility named samurai.
• As a growing number of younger Japanese are not marrying or remaining childless, Japan’s population is expected to drop to around 88 million by 2065.
• Since privatization in 1987, dozens of Japanese railway companies compete in regional and local passenger transportation markets; major companies include seven JR enterprises, Kintetsu, Seibu Railway and Keio Corporation.
• The country annexed Korea in 1910, invaded China in 1937, and attacked the U.S. and European colonial powers in 1941, thus entering World War II as an Axis power.
• The Sendai Nuclear Power Plant restarted in 2015, and since then several other nuclear power plants have been restarted.
• The largest domestic airport, Haneda Airport in Tokyo, was Asia’s second-busiest airport in 2019.

Japan is in the top three globally for both automobile production and export, and is home to Toyota, the world’s largest automobile company by production. The country’s manufacturing output is the fourth highest in the world as of 2023update. Japan maintains one of the world’s largest fishing fleets and accounts for nearly 15% of the global catch, prompting critiques that Japan’s fishing is leading to depletion in fish stocks such as tuna. Japan has a large cooperative sector, with three of the world’s ten largest cooperatives, including the largest consumer cooperative and the largest agricultural cooperative as of 2018update. In 2024, Japan was the world’s eight-largest exporter and sixth-largest importer. The Japanese yen is the world’s third-largest reserve currency after the US dollar and the euro.
With a population of over 123 million as of 2025, it is the world’s 11th most populous country. The Japanese archipelago consists of four major islands alongside 14,121 smaller islands. (The population of Tokyo Metropolitan Area as of June 1, 2021 is 13,999,568, approximately 10% of Japan’s total population.) Japan is the most successful Asian Rugby Union country and hosted the 2019 IRB Rugby World Cup. The country gained the hosting rights for the official Women’s Volleyball World Championship on five occasions, more than any other country.
Japan has close economic and military relations with the United States, with which it maintains a security alliance. It is the world’s fifth-largest donor of official development assistance, donating US$9.2 billion in 2014. Since the late 19th century, the judicial system has been largely based on the civil law of Europe, notably Germany. Historically influenced by Chinese law, the Japanese legal system developed independently during the Edo period through texts such as Kujikata Osadamegaki. It consists of a lower House of Representatives with 465 seats, elected by popular vote every four years or when dissolved, and an upper House of Councillors with 248 seats, whose popularly-elected members serve six-year terms.

Law enforcement

Around 14,500 BC (the start of the Jōmon period), a Mesolithic to Neolithic semi-sedentary hunter-gatherer culture characterized by pit dwelling and rudimentary agriculture emerged. The old Malay name for Japan, Japang or Japun, was borrowed from a southern coastal Chinese dialect and encountered by Portuguese traders in Southeast Asia, who brought the word to Europe in the early 16th century. In the 13th century, Marco Polo recorded the Early Mandarin Chinese pronunciation of the characters 日本國 as Cipangu. The characters 日本 mean ‘sun origin’, which is the source of the popular Western epithet “Land of the Rising Sun”. Nihon is typically used in everyday speech and reflects shifts in Japanese phonology during the Edo period.
The 1920s saw a political https://www.richyfox.co.uk/ shift towards statism, a period of lawlessness following the 1923 Great Tokyo Earthquake, the passing of laws against political dissent, and a series of attempted coups. The early 20th century saw a period of Taishō democracy (1912–1926) overshadowed by increasing expansionism and militarization. The Edo period gave rise to kokugaku (“national studies”), the study of Japan by the Japanese.

Between the 4th and 6th centuries, its kingdoms were united under an emperor in Nara and later in Heian-kyō. Japan’s neighbors include the Republic of Korea, China and Russia.
The war cost Japan millions of lives and many of its conquered territories, including de jure parts of Japan such as Korea, Taiwan, Karafuto, and the Kurils. Throughout areas occupied by Japan during the war, numerous abuses were committed against local inhabitants. In 1940, the Empire invaded French Indochina, after which the United States placed an oil embargo on Japan.