Why Correct: Sher Shah Suri ordered the construction of the Grand Trunk Road, originally called Sadak-e-Azam, connecting Sonargaon in East Bengal to Peshawar in the northwest. This road later became known as the Grand Trunk Road and remains a major artery of the Indian subcontinent.
Distractor Analysis: Humayun was the Mughal emperor who lost his throne to Sher Shah and spent years in exile; he did not commission this road. Akbar, the third Mughal emperor, expanded and maintained the road network but did not order the original construction of Sadak-e-Azam. Jahangir, Akbar's son, is known for his memoirs and patronage of art, not for building this road.
Takeaway: The Grand Trunk Road, one of Asia's oldest and longest roads, was also used by the British who renamed it the Grand Trunk Road. Sher Shah also introduced the silver coin called Rupiya and a system of land revenue reforms, making him a significant administrator of the Sur dynasty.