There were no empires, as defined by western history, in southeast Asia.
There were:
1. Chinese Empire
2. Mongol Empire
3. Persian Empire
4. Ottoman Empire
5. Japanese Empire
6. Russian Empire (this empire overlaps Europe and Asia/Eurasia).
Khmer Empire was the empire of Cambodia that was the only empire that existed in the southeast Asia. Southeast Asia countries (Cambodia, Burma, Laos, Vietnam, Thailand, Brunei, Indonesia, Singapore, Philippines, and Malaysia). Khmer Empire was influenced by much of Indian, and later then, modern Cambodia was influenced by Chinese. Khmer Empire used to border the Mongol Empire when they're both at the greatest extend. Angkor Wat was the capital of the Khmer Empire(802AD-1431AD). Want to be sure? Check wikipedia
BURMESE
The environment and geography of Southeast Asia allowed for several agricultural societies to emerge, the largest of which was the Khmer Empire in present-day Cambodia.
The Aryan Empire
The Minangukabau
Ayutthaya
ottoman
The Khmer Empire was located in Southeast Asia, Cambodia. The capital of the Khmer Empire was Angkor Wat, Northwestern Cambodia.
The Minangukabau
To match the growth of the British Empire</zzz> They feared the growing strength of the British Empire.
No, the Persian Empire was far mor extensive, reaching from Libya to Central Asia.
The area now known as the Republic of Turkey was the centre of the Ottoman Empire. The Ottoman Empire existed from 1299-1923 and stretched over Southeast Europe, Western Asia, the Caucasus, North Africa, and the Horn of Africa.
To match the growth of the British Empire</zzz> They feared the growing strength of the British Empire.