Welcome. Your English appears to better than mine and half the other forum members that write here. Do not worry, most Europeans are better educated in USA history, and English writing and language than ourselves.
Please share with us which style of hive you keep your bees in, which strain of honeybee you keep, how many colonies you keep and anything else you may be willing to share with us?
I believe you have many different climates in your country due to the geographic lay of the land. There is lots of great info on the internet about beekeeping out of Germany that I have found quite valuable.