The first Indian King to claim to be the destroyer of Saka power was Gautamiputra Satakarni.

Gautamiputra Satakarni was a ruler of the Satavahana Empire in ancient India. He is considered one of the greatest kings of the Satavahana dynasty, known for his military conquests and administrative reforms. His reign is believed to have lasted from around 86 to 110 CE.

Background:
During Gautamiputra Satakarni's time, the Satavahana Empire was engaged in a long-standing conflict with the Sakas, who were a Central Asian tribe that had established their rule in parts of western and central India. The Sakas had successfully expanded their influence and established their own kingdoms, challenging the authority of the Satavahanas.

Claim to Destroy Saka Power:
Gautamiputra Satakarni's claim to be the destroyer of Saka power is based on the numerous military victories he achieved over the Sakas. He waged several campaigns against them and successfully defeated their armies, reclaiming the territories that had been under Saka control.

Military Campaigns:
Gautamiputra Satakarni's military campaigns were characterized by strategic planning, tactical brilliance, and efficient leadership. He conducted expeditions across various regions, including western and central India, and achieved significant success in his battles against the Sakas.

Administration and Reforms:
In addition to his military achievements, Gautamiputra Satakarni is also credited with implementing administrative reforms in his empire. He introduced various measures to strengthen the administration, improve governance, and promote economic growth. His reign witnessed advancements in trade, agriculture, and infrastructure development.

Legacy:
Gautamiputra Satakarni's victories over the Sakas and his administrative reforms contributed to the consolidation and expansion of the Satavahana Empire. His reign marked a significant milestone in Indian history, highlighting the resilience and strength of indigenous dynasties against foreign invasions.

Conclusion:
Gautamiputra Satakarni's claim to be the destroyer of Saka power is based on his successful military campaigns against the Sakas and his subsequent reestablishment of Satavahana rule in the territories that had been under Saka control. His reign was characterized by military prowess and administrative reforms, leaving a lasting impact on the history of ancient India.