Why was jade so precious in ancient china?

What person was influential and trying to ease race relations in america during the early part of the twentieth century

What battle in the civil war was known as the bloodiest war ?

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.