East Malaysia is 50% bigger than Peninsular Malaysia at , comparable with South Dakota or Great Britain. East Malaysia contains the five highest mountains in Malaysia, the highest being Mount Kinabalu at 4095 m, which is also the highest mountain in Borneo and the 10th highest mountain peak in Southeast Asia. It also contains the two longest rivers in Malaysia – Rajang River and Kinabatangan River. Banggi Island in Sabah and Bruit Island in Sarawak are the two largest islands that are located entirely within Malaysia. The largest island is Borneo, which is shared with Indonesia and Brunei. The second largest island
Majlis Bahasa Brunei-Indonesia-Malaysia Majlis Bahasa Brunei-Indonesia-Malaysia MABBIM (shortform for "Majlis Bahasa Brunei-Indonesia-Malaysia" - "Language Council of Brunei-Indonesia-Malaysia") is a regional language organisation which is formed to plan and monitor the development of the Malay language in the region. It consists of three countries - Brunei, Indonesia and Malaysia. Majlis Bahasa Indonesia-Malaysia (MBIM, Language Council of Indonesia-Malaysia) which was formed on 29 December 1972, after a Pernyataan Bersama was being signed by the late Tun Hussein Onn who was the Education Minister of Malaysia and Bapak Mashuri Saleh S.H. who was the Education and Cultural Minister of Indonesia on 23 May 1972 in Jakarta.