Question

who was mahmud of ghazni ? why he invaded

Answer 1

Mahmud of Ghazni first invaded modern day Afghanistan and Pakistan and then parts of India. Mahmud defeated, captured, and later released the Shahi ruler Jayapala, who had moved his capital to Peshawar (modern Pakistan). Jayapala killed himself and was succeeded by his son Anandapala.

Answer 2

Maḥmūd ibn Sebüktegīn, more commonly known as Mahmud of Ghazni, also known as Mahmūd-i Zābulī, was the most prominent ruler of the Ghaznavid Empire. He conquered the eastern Iranian lands, modern Afghanistan, and the northwestern Indian subcontinent from 997 to his death in 1030. Mahmud turned the former provincial city of Ghazna into the wealthy capital of an extensive empire that covered most of today's Afghanistan, eastern Iran, and Pakistan, by looting the riches and wealth from the then Indian subcontinent.