Question

Which type of material was used to build the Great Wall?

rammed earth
brick masonry
carved stone
concrete

Answer 1

Before the use of bricks, the Great Wall was mainly built from rammed earth, stones, and wood. During the Ming Dynasty, however, bricks were heavily used in many areas of the wall, as were materials such as tiles, lime, and stone.

en.wikipedia.org/wiki/Great_Wall_of_China