Question

what was the history of Grand Trunk Road

Answer 1

go check in your text book man

Answer 2

hey friend here is ur answer
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Research indicates that the Grand Trunk road predated even Buddha's birth and was called Uttara Path, meaning, road to the North. Salman Rashid attributes the Road's construction to Chandragupta Maurya.During the time of the Maurya Empire in the 3rd century BCE, overland trade between India and several parts of Western Asia and the Hellenistic world went through the cities of the north-west, primarily (Takshashila in present-day Pakistan. Takshashila was well connected by roads with other parts of the Maurya empire. The Mauryas had maintained this very ancient highway from Takshashila to Pataliputra (present-day Patna in India). 
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I hope it will help u