How does a case get to the supreme court

What was the main argument of plessy in plessy v. ferguson

In 1944, the supreme court upheld the authority of the u.s. government to order the internment of a minority group in the interest of national security, even though there was no evidence that any members of this group were disloyal to the united states. should the same policy be applied today against u.s. muslims or muslim immigrants? why or why not? are these forms of internment different from native reservations? if so how? if not, why?

The purpose of lycees was to a: prepare male candidates for government jobs b: prepare male candidates for the napoleonic wars c: prepare female candidates for government jobs