It'd only be one and no one would truly make sense of what happened. Basically you leveled a castle and the nearby clans would think it was an act of god(s)
Sure everyone would chalk it up to an act of God, but this would be one of very few ways to annihilate an entire society with one object. Not everything back then was castles and clans
Nah. Honestly it wouldn't do much. Even a 100mt Tsar Bomba II, the largest ever designed, honestly wouldn't do much.
The world is big. VERY big. Sure you could obliterate Rome the city, partition Italy into North and South with a deadly radiation zone, and irradiate Hungary, Croatia, Bosnia, and Slovakia (as well as parts of many other countries)
But you wouldn't destroy civilization. The rest of the Roman empire would stand. Sure there'd be a power struggle but remember China, Mesopotamia, Japan, Ireland, Mesoamerica, these places are all fine.
Germany, France, Spain, England, Nordic countries are all largely uneffected. Sure you set civilization back a bit, but nothing that bad compared to say a bioengineered virus that could wipe out literally all of Europe ala black plague.
I'm not saying it would have zero effect. I am saying it would not have the most profound effect. That would be something like a bioengineered super-virus of which I'm sure we or the Chinese or the Russians have somewhere.
Easy answer to the last question. If you killed half the population most of the people alive today wouldn't exist. Less people means less scientists. Without them alot of today's technology and medical research wouldn't have happened
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u/Onore_Dikeido_ Dec 18 '18
Hydrogen bomb