Common law evolves in part based on decisions in court cases.
"Common law" in English history was the body of precedents established by courts and procedures from the Middle Ages onward. It wasn't so much that there was a codified system of laws, but there were past practices and procedures that informed legal decisions to be made in the present. The American legal system still takes this sort of approach to law, letting past precedents inform decisions on new situations that arise.
Russia experienced food and fuel shortages
The guess what be The Knights of labor *not sure if this is 100% correct*.
Answer:
Correct answer is D, "It helped diffuse African American culture across the United States."
