This sort of list by its very nature can lead to overly simplistic and monolithic explanations of history and not every general claim will apply to every country or every decade.
Given those caveats, changes in gender roles have been quite dramatic in developed countries. In these countries, women can now hold property, get divorced, and have the right to equal treatment in the workforce and education. Although women have not caught up fully with male salaries, in most advanced economies, they match male rates of education and have increasingly close rates of labor force participation.
Two other gender and familial structures are gradually changing as well. The twentieth century marked a shift from extended to nuclear families as a basic household unit, with there also being a dramatic rise in single person and single parent households. This has changed the urban and suburban landscapes of many places. The growing acceptance of gay relationships and growth of gay marriage has also meant a change in family structures.
Changes in the economy and in transportation technology have fundamentally reshaped the human geography of the developed world. A reduction in the number of people involved in food production has led to increased urbanization and depopulation of rural areas and small towns while the ubiquity of the automobile has led to the growth of suburbs and urban sprawl.