Misc: Which US President ordered the dropping of the atom bombs on Hiroshima and Nagasaki?

Questions

What was the name of the first cartoon Scratchy was in??

Who poses as Krusty the Clown in the Kamp Krusty episode??

What drink does Bart make for the mobsters??

Who is the first person to make a wish on the monkey's paw??

According to the Duff Brewery Tour guide, what had a batch of Duff beer been contaminated with? (Duffless)?