Columbia subject headings:
Europe--Forecasting.
Europe--Politics and government--21st century.
European Union countries--Forecasting.
European Union countries--Politics and government--21st century.
Harvard subject headings:
Europe--Forecasting.
European Union countries--Forecasting.
Princeton subject headings:
Europe--Forecasting.
Europe--Politics and government--21st century.
European Union countries--Forecasting.
European Union countries--Politics and government--21st century.