Afghan Factionalism
Another problem Ibrahim Lodhi had when he ascended the throne in 1517 were the Afghan nobles. Some nobles backed Ibrahim’s older brother, Jalaluddin, to take up arms against his brother in the area in the east at Jaunpur. Ibrahim gathered military support and defeated his brother by the end of the year. After this incident, he arrested Afghan nobles who opposed him. He then proceeded by appointing new administrators, who were his own men. Other Afghan nobles supporter the governor of Bihar, Dariya Khan against Sultan Ibrahim.
Another factor that caused uprisings against Ibrahim Lodhi, was his lack of an apparent successor. His own uncle, Alam Khan, betrayed Ibrahim by supporting the Mughal invader Babur.
Babur claimed to be the true and rightful Monarch of the lands of the Lodhi dynasty. He believed himself the rightful heir to the throne of Timur, and it was Timur who had originally left Khizr Khan in charge of his vassal in the Punjab, who became the leader, or Sultan, of the Delhi Sultanate, founding the Sayyid dynasty. The Sayyid dynasty, however, had been ousted by Ibrahim Lodhi, a Ghilzai Afghan, and Babur wanted it returned to the Timurids. Indeed, while actively building up the troop numbers for an invasion of the Punjab he sent a request to Ibrahim; "I sent him a goshawk and asked for the countries which from old had depended on the Turk," the 'countries' referred to were the lands of the Delhi Sultanate.
Following the unsurprising reluctance of Ibrahim to accept the terms of this "offer," and though in no hurry to launch an actual invasion, Babur made several preliminary incursions and also seized Kandahar — a strategic city if he was to fight off attacks on Kabul from the west while he was occupied in India - from the Arghunids. The siege of Kandahar, however, lasted far longer than anticipated, and it was only almost three years later that Kandahar and its Citadel (backed by enormous natural features) were taken, and that minor assaults in India recommenced. During this series of skirmishes and battles an opportunity for a more extended expedition presented itself.
Read more about this topic: Lodi Dynasty