who built the great wall of china? May I have an answer?

Well, there wasn't one specific person who built it, but there was many different laborers to help create the bricks, bring the bricks to the site of the walls creation, and finally make the wall. But the person who decided to have the wall created was Emperor Qinshihuangdi in the Qin dynasty.

Emperor Qin shi haunt ordered soldiers and convicts to build that in order to protect his new dynasty