Answer:
D. racially-segregated public schools .
Explanation:
The landmark US Supreme Court´s sentence Brown v. Board of Education of 1954 stated that racial segregation of children in public schools was unconstitutional. It reverted the 1896 Plessy versus Ferguson decision that upheld segregated but equal public facilities as constitutional. Brown v. Board of Education gave impulse to the Civic Rights Movement.
The two parties signed the Hay–Bunau-Varilla Treaty. It gave the United States a ten-mile strip of land, all the rights to construct and administer a canal, and the right to protect the canal. In return, the Panamanians received $10 million and an annual rent of $250,000.
so the closest thing you have is C.