Which important war conference demanded the unconditional surrender of japan? casablanca tehran yalta potsdam

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.

b.

jim crow laws were enacted in northern states.

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.