Eratosthenes of Cyrene was a mathematician, grammarian, poet, geographer, librarian and astronomer from Ancient Greece, known for calculating the circumference of the Earth in 200 BC. He was born in Cyrene, in Africa, and died in Alexandria. He studied at Cyrene, Athens and Alexandria. The contemporaries called it "Beta" because they considered it the second best in the world in several aspects.
By 1840 there was a market revolution due to improvised transportation, the exports which contained by then more southern cotton than northern food crops had increased as much as sixfold.
The primary effects of the Triangle Shirtwaist Fire on labor conditions were that factories were generally made much safer, with easier exit routes to be taken in the case of fire.