To What Was French Historian Alexis De Tocqueville Referring When

To what was French historian Alexis de Tocqueville referring when he wrote,"it is possible to foresee that the freer the whites in America are,the more they will seek to isolate themselves"?

A) The more rights and liberties whites obtain, the less willing they are to share those rights with others such as African or Native Americans.
B) Democracy breeds in people (white Americans especially) an isolationist attitude, causing them to eschew involvement in foreign affairs.
C) As all whites gain rights and liberties despite social or economic status, they will be more willing to share those rights with nonwhites.
D) In order to gain rights and liberties, whites must oppress others, namely African and Native Americans.
E) Because white Americans are isolated from African and Native Americans, they do not see that they do not share the same rights and liberties.