What does it mean 'rift widens'?how was proceed events..

Because your question is rather incomplete, I am unable to
answer it all.  The term, "the rift widens" means that the division or opening between
two people, ideas, or countries has gotten larger.  The word rift can mean a problem
also, and the word widen suggests that it has become worse.  As for the events, which
events do you mean and from what source? If you mean which events are the steps to widen
the division, look for the problems the people have and how they allow the problems to
worsen without making an effort to correct them.  You could also look at the efforts
they make to correct the division which do not work.  Just put them in order and show
why they don't accomplish the healing this rift needs.