The Malay revolts, 1505-1507
Malacca had been ruled by Malays before they were annexed by Ayutthaya, and by the early 16th century the felt that it were time for a large rebellion. But the rebellion stayed in the south, Bangkok were never taken, the rebels were stopped before that. They however took control of the rich Trading center in Malaka, creating chaos in the empire. It was Malaka that had provided the empire with various useful supplies, and with the trade center in rebel hands, they got all those supplies. The Ayutthayan grand army moved south, clashing with the rebels whi occupied Malaka. Many brave men died, but in the end, it was a great victory for the empire, and the siege of Malaka began. Luckily, it was taken before it´s inhabitants were able to organize themselves, and Malaka remained as a part of Ayutthaya. The rebellion was not finished though. Johor, located south of Malaka, had only been under Ayutthayan control for about 30 years, (taken from Atjeh in the Holy war) and most of them dreamt of rebuilding the Malakan empire. When the Grand army engaged, they were surprised at the resistance from the rebels. They weren´t dressed as ordinary rebels, no they wore the old Malakan armors, wielded Malakan swords, and you could see the old flag everywhere. These guys hoped to "liberate" the city and rebuild the Malakan empire. That was however not what happened. The Grand army, using superior tactics, easily crushed the dreaming rebels. Peace and order were restored, for now.
The merchants
Ayutthayas merchants were well known in SE asia. Dominating The trading centers in Malaka and China, few nations managed to compete with the imperial merchants. Trading posts on the island of Sulawasi and a host of other smaller islands provided the empire with luxuries and fish. However, as Ayutthaya entered it´s slow but steady decline, so did the trade, and in 1530, most the trading posts would be burned down by angry natives, attempts to reestablish them were made, but all failed, and Ayutthaya gradually lost it´s influence in that region. However, the rich city of Jakarta still remained as a great center of the old colonial period. Colonization of new areas were abandoned, and people were instead sent to already existing colonies, mostly on Borneo. The navy was kept, the holdings still needed protection. But Ayutthaya turned inlands, and one last, great war would be fought, before the empire would collapse.
Next chapter, War, and the decline of the Ayutthayan empire.