Ten most important events? I think we can assign language, stone tools and fire/cooking to pre-hominds.
Then for humans we have (in rough date order):
clothes (100,000+ years ago)
art (40,000+ years ago)
sewing/thread (30,000+ years ago)
agriculture (20,000+ years ago)
pottery (18,000+ years ago)
domesticated animals (17,000+ years ago)
weaving (10,000+ years ago)
metal smelting (8,000+ years ago)
currency (7,000+ years ago)
writing (6,000+ years ago)
There are, of course, many recent events that might be worth adding to the list if we made a longer list than just ten. For example:
moveable type printing (ca 1,000+ years ago)
steam power (ca 300 years ago)
germ theory of disease (ca 200 years ago)
But it gets a lot harder to judge these recent events.
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