Around the world, most major cities are situated select one:
a. at elevations above 500 m.
b. near mountains, usually in a valley
c. on the more northern continents
d. along rivers, oceans, roads, or train routes
e. in agricultural areas

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated