How did the Han dynasty represent a change from the Qin era?

What was the historic border between the united states and mexico?

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 terms did the treaty of versailles place on germany