Answer:
Dharahara was constructed for military usage as a watchtower. When incidents of national importance occurred, bugles were blown from the top floor of the tower. This was the signal for soldiers to assemble. This tradition of bugle trumpeting continued until the collapse of the tower.
Answer:
It creates uncertainty because the audience cannot be sure if the ghost is actually present, or if Macbeth has simply gone mad.
The first vehicle to stop