Which scenario would not have been possible before the start of the columbian exchange

Before the Columbian Exchange, people could not eat certain foods or raise certain livestock depending on where they lived. 

Ifound this on google”the munich conference of 1938 was prompted by d. hitler's intention to take control of part of czechoslovakia. hitler sought to unite german-speaking people in a single nation and thus turned his sights on the sudetenland, a german-speaking region of czechoslovakia.” i hope it you