Question

3

The greatest achievements of the Qin dynasty were
building projects such as the Great vall.
paper.
inventions such as the seismograph.
the voyages of Zheng He.

Answer 1

building projects such as the great wall

Step-by-step explanation:

it is a famous historical site in China now;))

Answer 2

building projects such as the Great Wall.

Step-by-step explanation:

The first Qin emperor, built the Great Wall of China and it now on the list as one of the World's Greatest Architect.