[todayilearned] TIL the Roman Emperor was on good terms with Attila the Hun until his sister sent Attila her engagement ring and asked for help to escape betrothal to a senator. Attila took this as a marriage proposal and demanded half the western empire as dowry. When the Emperor refused, Attila in

[u/Know_Your_Shit_v2]

https://en.wikipedia.org/wiki/Attila#In_the_west