Columbia subject headings:
Civilization, Modern--21st century.
Civilization--Philosophy.
History--Philosophy.
Social change.
Social history--21st century.
Harvard subject headings:
Civilization, Modern--21st century
Civilization--Philosophy
History--Philosophy
Social change
Social history--21st century
Princeton subject headings:
Civilization, Modern--21st century.
Civilization--Philosophy.
History--Philosophy.
Social change.
Social history--21st century.