How did the plessy v. ferguson and brown v. board of education supreme court rulings reflect the courts changing interpretation of the equal protection clause of the fourteenth amendment? why was this change important to u. s society?

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.