During which time period was the most territory added to the mughal empire?

The Mughal Empire at its zenith commanded resources unprecedented in Indian history and covered almost the entire subcontinent. From 1556 to 1707, during the heyday of its fabulous wealth and glory, the Mughal Empire was a fairly efficient and centralized organization, with a vast complex of personnel, money, and information dedicated to the service of the emperor and his nobility.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.