Why was Aurangzeb called the last powerful Mughal ruler?

Aurangzeb is often referred to as the last powerful Mughal ruler because he expanded the empire to its greatest territorial extent, ruling over a vast and diverse realm at its peak. His reign (1658-1707) marked a significant consolidation of power, but also witnessed increased religious intolerance and military campaigns that strained resources. Following his death, the empire faced rapid decline due to internal strife, succession disputes, and external pressures, leading to the eventual fragmentation of Mughal authority. Thus, while he exemplified the Mughal dynasty's strength, his era also foreshadowed its decline.