What was one contribution made by eratosthenes in ancient greece?

A particularly famous contribution made by Eratosthenes would be the sieve of Eratosthenes. This is an algorithm used for find all of the prime numbers up to a named limit. It can also be used within arithmetic progressions to find prime numbers, too.

Idoubt anyone will do the essay for you but i can tell you who to do it over  you could do it over teddy roosevelt there's plenty he has done   and its interesting to learn

Jackson  said nullification 'means insurrection and war,' and called it a treasonous attack on america. the second aspect of the  force bill  was the passing in congress of a lower tariff in 1833. this was offered as a compromise to avoid conflict with south carolina, and to attempt to defuse the tense situation.source google