Question

What technological achievements occurred under the Han Dynasty? Select all that apply.

a. seismographs
b. metal swords and armor
c. decimal system based on 10
d.paper made from wood pulp
e.shipbuilding methods

Answer 1

A, D, and E

Step-by-step explanation:

Answer 2

Seismographs, shipbuilding methods, and paper made from wood pulp

Step-by-step explanation:

Zhang Heng, a Han scientist, developed the earliest known seismograph to detect and measure earthquakes. Cai Lun, an official in the Han court, invented a method for making paper out of wood pulp, and the Chinese made advances in methods of shipbuilding and invented the rudder to steer.