I believe they were both harmed by nuclear radiation. Hiroshima was when the USA bombed Japan with a nuclear bomb. Chernobyl is the disaster in which a reactor caught fire and caused the harmful radiation to spread. I hope that was helpful. :)
Answer:
It was an excellent choice of defense because the mountains ran down the seas which left way for only a narrow pass near the coast.
Explanation:
See answer. Explanation included in answer above
It forced state government to stop taxing farmers.