Plz put more info for us to answer
Because the earth is a globe and has rounded sides, it couldnt be a straight line it'd always have to be rounded to fit the curvature
Answer:
The largest river system in Bhutan, Drangme Chhu is the Bhutanese name for the holy Manas River. The 376 kilometres long river flows across Bhutan spanning 272 kilometres and covers the rest 104 kilometres by passing through the Indian state of Assam
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Water planishes the land
water keeps civilization alive
life depends on water