Greater Indonesia

Greater Indonesia, or in Indonesian and Malaysian, Indonesia Raya or Melayu Raya, was a political concept that sought to bring the so-called Malay race together by uniting the British territories of Malaya and Borneo with the Dutch East Indies. It was espoused by students and graduates of Sultan Idris Training College for Malay Teachers in the late 1920s, and individuals from Sumatra and Java including Muhammad Yamin and Sukarno in the 1950s.Indonesia Raya ("Greater Indonesia") is also the name of the Indonesian national anthem.

The Pan-Malay union was based on understandings on similarities in race, shared language, religion and culture among ethnic groups in Maritime Southeast Asia. The ancient concept of Alam Melayu or Nusantara advocates an historical awareness that the territory of British Malaya, British Borneo and the Dutch East Indies were once united, to a degree, under native empires such as Srivijaya, Majapahit, the Malacca Sultanate, Johor-Riau Sultanate and various other sultanates in Borneo island.

At the end of the 1920s, the idea to form a new independent nation grew among the people of Dutch East Indies, especially among educated pribumi (native Indonesian). While in the Malay peninsula, the idea of Greater Malay was proposed. In the Dutch East Indies, the activist youth of Indonesian nationalists were more interested in forming an independent Indonesia. In 1928 the Youth Pledge was declared in Batavia (today Jakarta) by Indonesian nationalist youth activists proclaiming three ideals; one motherland, one nation, and support one unifying language.

...
Wikipedia