Well, to start, the Supreme Court could have ruled differently in Plessy v. Ferguson.
In Plessy, the Supreme Court condoned the practice of "separate but equal" making it permissible for the white south (and north) to create discriminatory practices.
Information regarding the ways of living in the country
As President, Roosevelt pushed executive powers to new limits, arguing that the rise of industrial capitalism had rendered limited government obsolete.
Roosevelt’s stewardship theory unmoored presidential power from the Constitution and made it directly accountable to the people.
Roosevelt continued until his death to press for Progressive reforms that would move the country closer to the social democracies of Europe.