What is "sagala"

Sagala or Sangala, the ancient Greek name for the modern city of Sialkot in present-day Pakistan, was a city of located in northern Punjab, Pakistan. Sagala was known as Sakala to the natives of the Indian sub-continent during ancient times. Sagala (alias Sakala) is mentioned as the capital of the successor Greek kingdom when it was made the capital by King Menander I, son of Demetrius.