Which of these statements best describes the silk road?
a. a network of trade routes over land and sea linking europe and africa to asia
b. a system of land-based trade routes between west africa and europe
c. the sea route founded by marco polo leading from venice to china
d. the roads built in asian countries to enable the trade of goods locally

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