As of March 2017, Facebook had 1.28 billion active users each day, and over 85% of those users were outside of the U.S. and Canada.
Think about the last time you were on a conference call with someone in a different location. Did you run into any communication challenges — technical, or otherwise? Did you find yourself trying to speak up but failing to get a word in? If there were multiple people on that call, did you find that everyone was able to participate?