I came across a podcast on Berlin Wall and they said that for Germany post-World War II: "Ein Viertel wurde von den USA verwaltet." I would have imagined to use 'regieren' here. Turns out verwalten predominantly means 'to manage' etc but how do we differentiate between the two terms on a nation's level and in everyday use? How bad would it have been to use 'regieren' here?
Similarly, what is the difference between 'Verwaltung' and 'Regierung'?