between 220 B.C. and 200B.C.
the great wall of china is actually made of wood!
the great wall is made of stone ,wood ,and rock.
In a great year
The Great wall was made to keep out invading Mongols.
bricks
The Great Wall of China was made of bricks
Great Wall of China.
The Great Wall of China was made with bricks and cement.
The Great Wall of China was built in the 7th century
bricks
no
china