It happened from 1618-48.
The Thirty Year War lasted 30 years. From 1618-1648.
Yes, there should be hyphens in "thirty-year-old" when used as a compound adjective before a noun. The correct phrasing would be "a thirty-year-old civil war." The hyphens help clarify that "thirty-year-old" is a single descriptor for the civil war.
spanish
Treaty of Westphalia
17th century it was from 1618 to 1648
The treaty of Westphalia ended the Thirty Year's War
I never knew there was a 30 year war?!
There were not 36 wars between Athens and Sparta.
well i dont know
In 1618 with a conflict between Bohemia and the emperor.
well i dont know
well i dont know