What contributions did Archimedes, Euclid, Eratosthenes, and Aristarchus make in the Hellenistic Age?

wisdom

explanation:

the fact that that the teachings on the cosmic order comes from, or through, the heart center

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the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.