How long was prehistory vs. history? (i also don't understand the sentence as well)

150k-170k years of prehistory and around 30k years of history; The question is essentially asking how long humans have existed vs. how long humans have recorded data about their existence.

1. temperance, abolitionist, suffragist

early greek culture has had an important impact on government and education. first of all, they established the democratic political systems and procedures we have today. consequently, we inherited trial by jury for example. considering education, greek philosphers, mathematicians set he intellectual basis of different areas of studies. in addition, the alphabet originated from the phoenician alphabet into the one we have today and the first library was built in egypt. moreover, greek culture has an impact in current art, architecture and sports disciplines.