Question: How were the same people who the Somali Muslim Ajuran Empire declared independence from expelled from the natural boundary between Thailand and the country where Khong Island is found?

Knowledge 1: Khong Island
Khong Island or Don Khong is the largest island and the seat of administration in the Si Phan Don riverine archipelago located in the Mekong River, Khong District, Champasak Province, southern Laos. [SEP] Knowledge 2: Thailand
Thailand (/ ˈtaɪlænd / TY - land), officially the Kingdom of Thailand and formerly known as Siam, is a country at the center of the Southeast Asian Indochinese peninsula composed of 76 provinces. At 513,120 km (198,120 sq mi) and over 68 million people, Thailand is the world's 50th largest country by total area and the 21st-most - populous country. The capital and largest city is Bangkok, a special administrative area. Thailand is bordered to the north by Myanmar and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the southern extremity of Myanmar. Its maritime boundaries include Vietnam in the Gulf of Thailand to the southeast, and Indonesia and India on the Andaman Sea to the southwest. Although nominally a constitutional monarchy and parliamentary democracy, the most recent coup in 2014 established a de facto military dictatorship. [SEP] Knowledge 3: Somalis
Somali people in the Horn of Africa are divided among different countries (Somalia, Djibouti, Ethiopia, and northeastern Kenya) that were artificially and some might say arbitrarily partitioned by the former imperial powers. Pan-Somalism is an ideology that advocates the unification of all ethnic Somalis once part of Somali empires such as the Ajuran Empire, the Adal Sultanate, the Gobroon Dynasty and the Dervish State under one flag and one nation. The Siad Barre regime actively promoted Pan-Somalism, which eventually led to the Ogaden War between Somalia on one side, and Ethiopia, Cuba and the Soviet Union on the other. [SEP] Knowledge 4: Myanmar
The dynasty regrouped and defeated the Portuguese in 1613 and Siam in 1614. It restored a smaller, more manageable kingdom, encompassing Lower Myanmar, Upper Myanmar, Shan states, Lan Na and upper Tenasserim. The Restored Toungoo kings created a legal and political framework whose basic features would continue well into the 19th century. The crown completely replaced the hereditary chieftainships with appointed governorships in the entire Irrawaddy valley, and greatly reduced the hereditary rights of Shan chiefs. Its trade and secular administrative reforms built a prosperous economy for more than 80 years. From the 1720s onward, the kingdom was beset with repeated Meithei raids into Upper Myanmar and a nagging rebellion in Lan Na. In 1740, the Mon of Lower Myanmar founded the Restored Hanthawaddy Kingdom. Hanthawaddy forces sacked Ava in 1752, ending the 266-year-old Toungoo Dynasty.
Knowledge 1: Khong Island
Khong Island or Don Khong is the largest island and the seat of administration in the Si Phan Don riverine archipelago located in the Mekong River, Khong District, Champasak Province, southern Laos. [SEP] Knowledge 2: Thailand
Thailand (/ ˈtaɪlænd / TY - land), officially the Kingdom of Thailand and formerly known as Siam, is a country at the center of the Southeast Asian Indochinese peninsula composed of 76 provinces. At 513,120 km (198,120 sq mi) and over 68 million people, Thailand is the world's 50th largest country by total area and the 21st-most - populous country. The capital and largest city is Bangkok, a special administrative area. Thailand is bordered to the north by Myanmar and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the southern extremity of Myanmar. Its maritime boundaries include Vietnam in the Gulf of Thailand to the southeast, and Indonesia and India on the Andaman Sea to the southwest. Although nominally a constitutional monarchy and parliamentary democracy, the most recent coup in 2014 established a de facto military dictatorship. [SEP] Knowledge 3: Geography of Myanmar
Myanmar (also known as Burma) is the northwestern-most country of mainland Southeast Asia, bordering China, India, Bangladesh, Thailand and Laos. It lies along the Indian and Eurasian Plates, to the southeast of the Himalayas. To its west is the Bay of Bengal and to its south is the Andaman Sea. It is strategically located near major Indian Ocean shipping lanes. [SEP] Knowledge 4: Ottoman Empire
The discovery of new maritime trade routes by Western European states allowed them to avoid the Ottoman trade monopoly. The Portuguese discovery of the Cape of Good Hope in 1488 initiated a series of Ottoman-Portuguese naval wars in the Indian Ocean throughout the 16th century. The Somali Muslim Ajuran Empire, allied with the Ottomans, defied the Portuguese economic monopoly in the Indian Ocean by employing a new coinage which followed the Ottoman pattern, thus proclaiming an attitude of economic independence in regard to the Portuguese.
Knowledge 1: Khong Island
Khong Island or Don Khong is the largest island and the seat of administration in the Si Phan Don riverine archipelago located in the Mekong River, Khong District, Champasak Province, southern Laos. [SEP] Knowledge 2: Thailand
Thailand (/ ˈtaɪlænd / TY - land), officially the Kingdom of Thailand and formerly known as Siam (until 1939 and again from 1946 to 1948), is a country at the centre of the Indochinese peninsula in Southeast Asia. It is bordered to the north by Myanmar and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the southern extremity of Myanmar. Its maritime boundaries include Vietnam in the Gulf of Thailand to the southeast, and Indonesia and India on the Andaman Sea to the southwest. The capital and largest city is Bangkok. With around 69 million people, Thailand is the 20th-most - populous country in the world. [SEP] Knowledge 3: Geography of Myanmar
Myanmar (also known as Burma) is the northwestern-most country of mainland Southeast Asia, bordering China, India, Bangladesh, Thailand and Laos. It lies along the Indian and Eurasian Plates, to the southeast of the Himalayas. To its west is the Bay of Bengal and to its south is the Andaman Sea. It is strategically located near major Indian Ocean shipping lanes. [SEP] Knowledge 4: Ottoman Empire
The discovery of new maritime trade routes by Western European states allowed them to avoid the Ottoman trade monopoly. The Portuguese discovery of the Cape of Good Hope in 1488 initiated a series of Ottoman-Portuguese naval wars in the Indian Ocean throughout the 16th century. The Somali Muslim Ajuran Empire, allied with the Ottomans, defied the Portuguese economic monopoly in the Indian Ocean by employing a new coinage which followed the Ottoman pattern, thus proclaiming an attitude of economic independence in regard to the Portuguese.

Answer: The dynasty regrouped and defeated the Portuguese