In the fictional universe of Eric Flint 's best selling alternate history 1632 series which was composed of several German political units of the 1630s .
Alternate history 1632 series is a United States of Europe is formed out of the Confederation of Principalities of Europe .
In the fictional universe of Eric Flint 's best selling alternate history 1632 series , a United States of Europe is formed out of the Confederation of Principalities of Europe , which was composed of several German political units of the 1630s .