What are world sets in New World?

When you load up New World for the first time, you’re met with a list of regions, worlds, and something called world sets.  World sets differentiate worlds and will ultimately be used to merge them in the future. If a world has a low population—if absolutely necessary—Amazon will merge two or more worlds that share a world set into one. You’re currently allocated two character slots per region and are restricted to using separate world sets. Amazon is aiming to find a balance and prevent players from clogging up the