Plessy v. ferguson (1896) and brown v. board of education of topeka, kansas (1954) illustrate how the same constitutional issue of was interpreted differently over time.
a. slavery
b. state sovereignty
c. separate but equal
d. separation of church and state

Plessy v. Ferguson (1896) and Brown v. Board of Education of Topeka, Kansas (1954) illustrate how the same Constitutional issue of "separate but equal" was
interpreted differently over time, since Plessy v Ferguson deemed that it was constitutional, and Brown v. Board of Ed deemed it was not. 

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.