who built up the Great Wall?

There are several sections of Great Wall in China, so it would be constructed under different dynasties and emperors by Chinese Labour People. Some famous Great Walls remained so far were built in Qing Dynasty.

In fact , there are three main dynasties to build Great Wall.

The first dynasty was the Qin. Emperor Qin Shihang Ordered to build the Great wall. It was called the Qin Great Wall. It was 5000 kilometers long.

The second dynasty was the Han. Emperor Han Wu ordered to build the Great Wall.It was called the Han Great Wall. It was 10,000 kilometers long.

The last dynasty was the Ming. From the frist Emperor Zhu Yuanzhang until the last emperor of Ming dynasty,all the dynasty build the Great Wall.It was called the Ming Great Wall.

The Great Wall we can see today is Ming Great Wall.