Large social phenomena could come a few days / years / months sooner or later, they could have different leaders, different victims, somewhat different endings, etc. (It may be good to bet on possibility of slave rebellion in −70s, but becoming friends with Spartacus may be useless.)
Vulcanoes, sun eclipses, et cetera are fair game.
Large social phenomena could come a few days / years / months sooner or later, they could have different leaders, different victims, somewhat different endings, etc. (It may be good to bet on possibility of slave rebellion in −70s, but becoming friends with Spartacus may be useless.)