War between Ayutthaya and Burma

Timeline

1. 1520–1523Ayutthaya · Central PlainRamathipodi II strengthened control over vassal states of the southern Malay Peninsula, consolidating Siam's interests along the spice and tin trade routes while keeping watch on western Burmese penetration of the Tenasserim corridor.
2. 1524–1525Tenasserim–Mawlamyine border · TenasserimAyutthaya and Burmese Ava and Pegu forces had multiple armed clashes along the Tenasserim–Mawlamyine line, contesting control of coastal ports and trade routes to the Andaman Sea.
3. 1526–1529Lanna–Burma border · LannaAround the time of Ramathipodi II's death, Siam and Burma continued contesting influence toward Lanna. Though border conflicts did not escalate into full-scale war, they foreshadowed the first major Siamese–Burmese war after the rise of Toungoo in the 1530s.