what is the origin of its name?
It  is a combination of the word "Malay" and the Latin-Greek suffix "-sia"/-σία.
Malaysia
The name "Malaysia" is a combination of the word "Malay" and the Latin-Greek suffix "-sia"/-σία which can be translated as "land of the Malays"
where is malaysia located? Southeast Asia
wiki:9219317
Malaysia [SEP] Etymology
The name "Malaysia" is a combination of the word "Malay" and the Latin-Greek suffix "-sia"/-σία which can be translated as "land of the Malays". The origin of the word 'Melayu' is subject to various theories. It may derive from the Sanskrit "Himalaya", referring to areas high in the mountains, or "Malaiyur-pura", meaning mountain town. Another similar theory claims its origin from the Tamil words ""malai"" and ""ur"" meaning "mountain" and "city, land", respectively. Another suggestion is that it derives from the Pamalayu campaign. A final suggestion is that it comes from a Javanese word meaning "to run", from which a river, the "Sungai Melayu" ('Melayu river'), was named due to its strong current.