Which describes the mongols' rise to power?

a. they used a powerful navy to defeat their enemies

b. they sacked the city of constantinople

c. their powerful leader wendi led them to many victories in battle

d. they conquered large parts of asia under genghis khan

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

The communists triumphed over forces because of a well-disciplined fighting force, a single - minded sense of zeal , and strong convictions.

One of galileo’s contributions to science was a creating the coordinate plane system. b developing the scientific method. c improving the telescope. d inventing the astrolabe.