was a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese scientist and early advocate of Japanese Westernization

Westernization

Westernization or Westernisation , also occidentalization or occidentalisation , is a process whereby societies come under or adopt Western culture in such matters as industry, technology, law, politics, economics, lifestyle, diet, language, alphabet,...

. He is considered the founder of the "Greater East Asia

East Asia

East Asia or Eastern Asia is a subregion of Asia that can be defined in either geographical or cultural terms...

" concept.

Satō advocated an authoritarian

Authoritarianism

Authoritarianism is a form of social organization characterized by submission to authority. It is usually opposed to individualism and democracy...

 government based on Western science and political institutions. In his Keizai yōryaku (The Epitome of Economy), he wrote that "The rationale of economy is to manage the realm, develop goods, make domains affluent, and succor everyone."

Satō considered the European great power

Great power

A great power is a nation or state that has the ability to exert its influence on a global scale. Great powers characteristically possess military and economic strength and diplomatic and cultural influence which may cause small powers to consider the opinions of great powers before taking actions...

s to be a threat that Japan needed to counter by radical economic and military reforms, as well as imperial expansion along European lines. His 1823 work A Secret Strategy for Expansion（宇内混同秘策） called for Japanese world domination, describing how China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 should be conquered via Manchuria

Manchuria

Manchuria is a historical name given to a large geographic region in northeast Asia. Depending on the definition of its extent, Manchuria usually falls entirely within the People's Republic of China, or is sometimes divided between China and Russia. The region is commonly referred to as Northeast...

. He suggested that the Japanese government embark on "colonial

Colonialism

Colonialism is the establishment, maintenance, acquisition and expansion of colonies in one territory by people from another territory. It is a process whereby the metropole claims sovereignty over the colony and the social structure, government, and economics of the colony are changed by...

 and agricultural

Agriculture

Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the...

 undertakings" on uninhabited islands in the South China Sea

South China Sea

The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Singapore and Malacca Straits to the Strait of Taiwan of around...

. He also said that the Japanese government should take the Ryūkyū

Ryukyu Islands

The , also known as the , is a chain of islands in the western Pacific, on the eastern limit of the East China Sea and to the southwest of the island of Kyushu in Japan. From about 1829 until the mid 20th century, they were alternately called Luchu, Loochoo, or Lewchew, akin to the Mandarin...

 as a base to attack and capture Luzon Island

Luzon

Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

 by surprise, then use Luzon as a base for its "southward advance" to seize Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

 and other places, ultimately spreading its "military might" in Southeast Asia

Southeast Asia

Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

. He believed that Japan should "adopt suitable means of aggression and annexation

Annexation

Annexation is the de jure incorporation of some territory into another geo-political entity . Usually, it is implied that the territory and population being annexed is the smaller, more peripheral, and weaker of the two merging entities, barring physical size...

" to "increase its national interest

National interest

The national interest, often referred to by the French expression raison d'État , is a country's goals and ambitions whether economic, military, or cultural. The concept is an important one in international relations where pursuit of the national interest is the foundation of the realist...

s." This became the first draft of Japan's "southward advance" strategy.