Help, who was it? Time limited

What was america's response to the holocaust before the war? what could the us have done differently?

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

Why did win shihuangdi force all nobles to live at the capital?