Why are there so few structures still surviving from ancient Mesopotamia?

Question

(2 points)
Responses

All of the structures from this time period were made from clay bricks, and natural erosion has worn most of the small buildings away.
All of the structures from this time period were made from clay bricks, and natural erosion has worn most of the small buildings away.

Many ruins have long served as quarries for building materials.
Many ruins have long served as quarries for building materials.

Wars and pillaging of artifacts contribute to the lack of surviving structures.
Wars and pillaging of artifacts contribute to the lack of surviving structures.

all of the above
all of the above

Answer 1

All of the above.

Each of the points mentioned contributes to the scarcity of surviving structures from ancient Mesopotamia. The clay bricks used for construction are susceptible to erosion, many ruins have been repurposed for building materials over the centuries, and conflicts have led to the destruction and looting of artifacts, all impacting the preservation of these ancient sites.