Columbia subject headings:
Harvard subject headings:
Europe--Economic conditions--21st century.
Europe--History--21st century.
Europe--Politics and government--21st century.
Germany--Economic conditions--1990-
Germany--History--1990-
Germany--Politics and government--1990-
World politics--1989-
Princeton subject headings:
Civilization, Modern--21st century.
Europe--History--21st century.
Europe--Politics and government--21st century.
Germany--History--21st century.
Germany--Politics and government--21st century.