The 30 Years' War began as a struggle between German Protestant princes & this Catholic "Empire"
[DOC] [TLE] Thirty Years War facts, information, pictures | Encyclopedia.com ... [PAR] Make research projects and school reports about Thirty Years War easy with ... in 
the Holy Roman Empire, the military and political events of the thirty years 
between ... Their attempts to exploit the simmering religious conflict in Germany, 
which ... of the ecclesiastical principalities that were ruled by Protestant prince-
bishops,... [DOC] [TLE] Thirty Years' War [PAR] Thirty Years' War began in 1618 and ended in 1648.