I’m not sure which four rights you are referring, so I’ll make an educated assumption.
1. Freedom of the press has been expanded with information now being harder to control
2. Basic civil rights have been expanded, such as freedom of movement with the abolition of Southern Jim Crow laws
3. The right to vote has been granted to members of minority groups, and women voting has become more culturally accepted
4. Pay has been made much more equal, equal work leads to equal pay despite the sex or race of the individual
