By wash I think it means get rid of, your hands might suggest youve done something. maybe it means to gget something off your chest.
The concept of nullification is a "legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution)."
Answer:
Eli Whitney,American inventor, mechanical engineer, and manufacturer, most remembered as the inventor of the cotton gin but should be remembered for the concept of mass production of parts that can be used interchangeably
The answer is B, or "The institution of a single language for government"
