[Bratch]

... Mt Tambora in 1815

Changed history - 1816 had cold summer, starvation, etc. Affected migrations in US as well. New Englander’s began migrations to Midwest

It also created the circumstances that led to Boris Karloff becoming a household name.

1815 Eruption of Mount Tambora

[KamperKen]

"It also created the circumstances that led to Boris Karloff becoming a household name. "

Perhaps the most important and lasting effect of all.