<span>The obligations of serfs were to work for lords and knights. Serfs lives were much more difficult than that of a lord or knight. Serfs didn't have freedoms like the lords and knights. Knights would sometimes serve the lord as well but could also be the lord of a castle. Serfs didn't have that option.</span>
"<span>C. British tea was being imported into India" is correct, although there were also issues with pay. These issues weren't as much of an issue as the British importation, however. </span>
Answer: it signaled the end of legalized racial segregation in the schools of the United States, overruling the "separate but equal" principle set forth in the 1896 Plessy v. Ferguson case.
Explanation: In this milestone decision, the Supreme Court ruled that separating children in public schools on the basis of race was unconstitutional.