Why their are no ancient buildings in quetta?

Quetta, the capital of Balochistan in Pakistan, lacks ancient buildings primarily due to its history of destruction and reconstruction. The city has faced numerous natural disasters, such as earthquakes, which have led to the loss of many historical structures. Additionally, the region's tumultuous history, including invasions and conflicts, contributed to the absence of well-preserved ancient architecture. As a result, most of the existing structures in Quetta are relatively modern.