Draco didn’t know much about the muggle world, hardly anything really, but he did know a few things: muggle Britain was ruled by a monarchy and Wizengamot-like combination, there was a sizeable number of witches and wizards in the United States, the magical society in the States went into hiding even more than any other magical community, and that the muggles in the States were not to be messed with.  Though that didn’t stop Lucius from making business deals and stock investments in muggle businesses, even those in the States.  