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jan 1, 1621 - Phase 1. Philip IV of Spain entered the war AFTER HE BECAME KING in 1621

Description:

After the Defenestration of Prague in 1618, the Austrian Habsburgs asked their Spanish cousin Philip IV for support, and in 1621 he entered the war as king of Spain to back the Catholic cause.

Added to timeline:

22 days ago
1
0
101

Date:

jan 1, 1621
Now
~ 405 years ago