What did the chinese people of the han period use to tell time?

a. water clocks

b. quartz clocks

c. hourglasses

d. sundials

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

Ahistorian claims massive drought and famine in china caused the boxer rebellion. which of the following historians is making a counterclaim?

What was feudalism? (define the structure)