الامتحان اهو نرجو الاجابة السريعة علشان عندي اقتصد و احصاء

[محمود عبدالله محمد]

Q4- A 1- It began more than 200 years B.C
2-Because it is the longest structure ever built on earth
3-They : ancient builders and engineers
4- They used maths and physics to build great buildings, many of which are standing today.