Which strategy would be most helpful when preparing to deliver an effective presentation? dress appropriately
use multimedia
practice
cite sources

Got 4 mins!!!

I think it's multimedia

byzantine empire is the answer i think you are looking for.

hope this : )

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".