Neptune discovery telescope. The telescope at New Berlin Observatory (1835â1913), that discovered Neptune, was an achromatic refractor of 9 Paris inch (9.6 English inches or 24.4 cm) aperture made by the late Joseph Fraunhofer's firm, Merz und Mahler.
The southern states needed these slaves because the southern states had more farms and plantations than the North did. Not everyone could afford slaves; slaves were really expensive. They were expensive to buy because they had to be feed and taken care of.
A community for students. Which explains why African slavery was introduced to the Americas? A. Africa had far too many people to feed and looked for places to send them. B. Gold mines in Peru offered a chance to gain wealth and Africans wanted to work as miners. C. Factories in New England could not get enough Europeans to come to America to work.