You spelled significance wrong
Referendum is the political reform that gave people the power to approve or reject laws.
Answer:
brick
Explanation:
mohenjo-daro has a planned layout with rectilinear buildings arranged on a grid plan. most, built of fired and mortared brick and some incorporated sun-dried mud-brick and wooden superstructures.
Kings and royal families is your answer!!
Hope this helped!!
~xoxo Melis