Explanation:

Both statements are correct.

• The Moidams represent the late medieval (13th-19th century CE) mound burial tradition of the Tai Ahom Dynasty of Assam.

• These were primarily constructed using earth, bricks, and stone. The outer structure typically consisted of a mound of earth, often surrounded by a brick or stone wall.

• They are the resting place of royal families in Assam’s Charaideo district.

• It enshrines the mortal remains of the members of the Ahom royalty, who used to be buried with their paraphernalia.

• After the 18th century, the Ahom rulers adopted the Hindu cremation method and began entombing the cremated bones and ashes in a Maidam at Charaideo.

• These burial systems of the Ahom dynasty are comparable to the royal tombs of ancient China and the Pyramids of the Egyptian Pharaohs.

Hence option 4th is correct.