What are three characteristics of the agricultural revolution?
a. new tools made it possible for more crops to be grown.
b. crop rotation was invented, making it harder on soil.
c. larger cities became a reality.
d. farmers learned to control water through wells and canals.
e. more people were needed for farming.

22. the effect of threshold braking is to a. cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.