Yes, German states (and other nations) ruled by Protestants were "freed" from the coalition of Catholic states known as the Holy Roman Empire. The Protestant states thus no longer were under authority of the Pope.
Far more important is that this savage war from 1618-1648 beat both Catholics and Protestants into grudging acceptance of each other. This "tolerance" ended all Catholic efforts at Counter-Reformation, and its attendant religious wars.
Also crucial to ending strife was the agreement that the official religion of any state, no matter the beliefs of its population, was to be the religion of the state's ruler.
True
it resulted in independence
Austria
The United States of America. Another result was the American Revolution.
No. Italy was already an independent state from 1861. The Franco-Prussian War resulted in the unification of the North German Federation with the southern German states of Baden, Wurttemberg, and Bavaria and the former French territories of Elsaß-Lothringen to create the German Empire.
Yes - America's Declaration of Independence (from England and all others) resulted in the formation of the United States of America from the original thirteen colonies.
the holy Roman Empire and german states were weakened
the holy roman empire and german states were weakened
The Holy Roman Empire and German states were weakened.
Germany was not a country during the Thirty Years War. The German states that would later be unified into Germany were the main battlefields.
They wanted all the thirty-something German-speaking states united into one country.
Germany never "got independence". Germany was formed by way of military and political unifications of previously independent and sovereign territories. The last states to join the German Confederation were the southern German states of Bavaria, Baden, Wurttemberg, and (the now French) Elsass-Lohringen.
It was created in 1815 (at the Congress of Vienna) and lasted till 1866.