Existing evidence supports the possibilities of a single trans - Saharan migration, many migrations along one route, or multiple migrations along several different routes. (sciencedaily.com)
Imagine barreling down a road while being chased by a giant death laser, at which point you run up a wall and end up on several different routes depending on which direction you take and whether or not you decided to jump. (kickstarter.com)
A person can become a stepgrandparent through several different routes. (thespruce.com)