How did the SCLC distinguish the problems of black residents of a Northern city like Chicago from those in a Southern city like Birmingham?

24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.

Why do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?