<em>Road transport is most common in Nepal due to its terrain. If you take a look at a map, Nepal has mountainous terrain. Other travel methods are either expensive or restricted.</em>
<em><u>1)Travel via sea isn't possible due to to its borders. (landlocked nation)</u></em>
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<em><u>2) Air travel is also expensive as Nepal is economically disadvantaged due to the lack of natural resources it can extract.</u></em>