So the thirty years war started way back with Charles V.
So Charles had a brother and his name was Ferdinand. He got the title holy Roman emperor after his brother died Charles V. Then when Ferdinand died he passed the german lands and title down to his son Maximilian who then passed it onto his son Matthias. And then when Matthias died he had no children so he gave it to his cousin Ferdinand II. At those times Germany was a country and had a lot of different little places all ruled by different princes. And the Princes could choose to either be Catholic or Protestant. Most of the princes were Protestant but Ferdinand like his Great uncle Charles V was a Catholic. He did not like Protestant people he passed some laws that made the people in his part of Germany to be Catholic. The Protestant people didn't like this, especially in this on part called Bohemia. They took up their people to protest against Ferdinand. But Ferdinand was not it Germany. But he had left to people to rule his land for him. When the people came to protest the two people got scared and told them to leave but they broke in and threw them out of a window 50 ft from the ground. But they landed in poooooop splaat. So they were safe. But when Ferdinand came back he got mad. After a little bit he wanted to be the Holy roman emperor but he first had to convince 7 other princes. So he got an army with help from Austria and Spain and he went to Bohemia and killed all of the rebels very quickly and he executed anyone who tried to oppose him. Then he took the Protestant land and gave it to his Catholics. But instead of having no one else try to go with the rebellion people got worried and denmark and england joined forces and attacked Ferdinand when they met a lot of people died and it went on for actually 41 years not 30.
