What was the general impact of the thirty years war on europe?

The Thirty Years War had a wide impact on Europe.  However, in essence, it ended in a draw.France rose to prominence in Europe as a result of its war with Spain, which would continue for more than a decade after the Peace of Westphalia, which ended the Thirty Years War.  One of her greatest generals, the Vicomte de Turenne, would emerge from the Thirty Years War and continue leading France to victory.  He was the only French general who Napoleon would name in his list of greatest generals of all time.The Swedish Empire began its rise as a result of the Thirty Years War.  However, its role as a powerhouse in Europe would be short-lived, ending in the early 1700's after the Great Northern War with Russia.

The answer is crop yield.