What was the cause of the 1816 "Year Without a Summer"?

old metal worker, beers were invented way before the 19th century!

Rick-N-Bacher, Krakatoa was in the 1880s - seven decades later than this one.

I am a born/raised Indiana gal& did not know this was the year that Indiana became a state-thank you!

bribiepete, The novel Frankenstein was penned and Indiana became a state.