Answer:
Due to same religion of the people, it act as a unifying force.
Explanation:
Hinduism served as a unifying force in South Asia from 1200 to 1450 CE because it was the main religion which was practiced by most of the population of people living in these regions. So it bring unity among these people due to the same religion of most of the people of South Asia. So we can say that Hinduism served as a unifying force among people in the region of South Asia.
The Egyptian Pyramids is one example of a construction made of large stones. HOWEVER, The question seems that there should be pictures included, but there is not. So I give an example to help however I can, Feel free to comment and give more context if you wish for further help.
Answer:
is in the picture above hope it helps:)