Idrieus vs Sinmun of Silla

Upon the death of his brother Mausolus, Idrieus became the Hecatomnid ruler of Caria. He continued the policies of his predecessors, maintaining Carian autonomy under Persian suzerainty and overseeing the region's administration.

Idrieus and his sister-wife Ada completed the construction of the Mausoleum at Halicarnassus, the tomb of Mausolus. This structure became one of the Seven Wonders of the Ancient World, showcasing Carian wealth and Hellenistic architectural influence.

Idrieus provided military support to the Persian satrap Artabazus of Phrygia during his revolt against Artaxerxes III. This action demonstrated Caria's complex relationship with the Achaemenid Empire, balancing autonomy with loyalty.

Idrieus died in 344 BC, after ruling Caria for approximately nine years. His sister-wife Ada succeeded him as ruler, continuing the Hecatomnid dynasty's control over Caria until the arrival of Alexander the Great.

Sinmun built Sacheonwangsa Temple in Gyeongju, dedicated to the Four Heavenly Kings of Buddhism. The temple was intended to protect the kingdom from external threats and internal strife, reflecting the integration of Buddhist beliefs into state security.

Sinmun faced a rebellion led by Kim Heumdol, a powerful aristocrat who opposed the centralization of power. The king's forces crushed the revolt, executing the rebels and confiscating their lands. This victory solidified Sinmun's control over the unified kingdom.

King Sinmun reorganized the Silla government by establishing a centralized bureaucracy modeled on Tang China. He created new administrative offices and standardized tax collection, strengthening royal authority and reducing the power of local aristocrats.

Sinmun established the National Confucian Academy in Gyeongju, which taught Confucian classics and trained government officials. This institution promoted Confucian values in governance and created a merit-based system for selecting bureaucrats.