<Tr> <Th> Major cities </Th> <Td> Chittagong, Dhaka, Rajshahi, Purnea, Patna, Varanasi, Agra, Mathura, Delhi, Sonepat, Panipat, Kurukshetra, Ambala, Ludhiana, Amritsar, Lahore, Gujranwala, Rawalpindi, Peshawar, Jalalabad, Kabul </Td> </Tr> <P> The Grand Trunk Road is one of Asia's oldest and longest major roads . For more than two millennia, it has linked the Indian subcontinent with Central Asia . It runs from Chittagong, Bangladesh west to Howrah, West Bengal in India, then across Northern India through Delhi, passing from Amritsar . From there, the road continues towards Lahore and Peshawar in Pakistan, finally terminating in Kabul, Afghanistan . </P> <P> The route spanning the Grand Trunk (GT) road existed during the reign of Chandragupta Maurya, extending from the mouth of the Ganges to the north - western frontier of the Empire . The predecessor of the modern road was rebuilt by Sher Shah Suri, who renovated and extended the ancient Mauryan route in the 16th century . The road was considerably upgraded in the British period between 1833 and 1860 . </P> <P> It coincides with current N1 (Chittagong to Dhaka), N4 & N405 (Dhaka to Sirajganj), N507 (Sirajganj to Natore) and N6 (Natore to Rajshai towards Purnea in India) in Bangladesh; NH 12 (Rajshahi to Purnea), NH 27 (Purnea to Patna), NH 19 (Patna to Agra), NH 44 (Agra to Jalandhar via New Delhi, Ambala and Ludhiana) and NH 3 (Jalandhar to Attari, Amritsar towards Lahore in Pakistan) in India; N - 5 (Lahore, Gujranwala, Gujrat, Jhelum, Rawalpindi, Peshawar and Khyber Pass towards Jalalabad in Afghanistan) in Pakistan and AH1 (Torkhan - Jalalabad to Kabul) in Afghanistan . </P>

Grand trunk road from peshawar to kolkata was built by
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