Which of the following is not one of the factors affecting supply

Which of the following was used only once, to ratify the 21st amendment (repealing prohibition)? a.three-fourths of both houses of congress. b.three-fourths of the state legislature approved it. c.two-thirds of the state legislature approved it. d.ratifying conventions in three-fourths of the states approve it.

What from the columbian exchange had perhaps the biggest impact on the world?

What is political gerrymandering, what does is accomplish, and why might legislators use this tactic in redistricting