I bought a small sailboat last summer as I live near the water, and even in strong wind I could tell the thing doesn’t move that fast, so I was thinking ships like the Mayflower must have taken forever to cross the ocean. No wonder people died.
So did pests, such as the aphid that eats grapevine roots.
Shorter, “fossil-fuel” powered crossings allowed them to survive until dry land.
Japanese beetles? Zebra mussels? Etc.
Oops.
Forgot the coronavirus.