How the scientist can use the material to investigate the refraction of light

Select all that apply. in the australian empire, what group(s) wanted to establish an autonomous state? greeks czechs hungarians ottoman turks

Plz ! after the first battle of bull run general ivan mc dowell was removed from command of the union army he was replaced by a. general ulysses s. grant. b. general george mcclellan. c. general robert e lee. d. general george meade.

What became known as the gold on north america? a) sugar b) rum c) cotton d) tobacco