By the time you get to the 19th century, broad area of central europe, german culture / nations, struggle for supremacy between hapsburgs around modern day austria / northern germany. Person who comes into inheritance in fullest sense charles v 1519 1556. Focusing on charles, dissolution / development of the empire after that. Good deal of time in war, vari. ous countries feel either encircled or threatened by charles, etc. Everyone has reason to feel threatened by charles v. Spends his time in wars against one or the other or all of them, etc. Main thing to know: people at the time thought that he was a threat, so they responded to that threat. People feared him so they continually allied against him. Geopolitical reasons various territories he threatens . French leading nation working against him, but ottomans and others as well. Understand that the reformation starts to get going / political events around.