Slaves first arrived in Mississippi in French ships that came from West Africa where they had bought the slaves, and then brought them to Mississippi to sell/trade. Hope it helps!
Probably the invention of Papyrus (paper)
Rene Descartes is frequently considered the first modern philosopher. His
first publication, Discourse on Method (1637), was the touchstone of the
scientific method. A response to the lack of clarity he saw in the world of
science, Discourse describes how scientific study should be prosecuted so
as to achieve the utmost clarity, by using deductive reasoning to test
hypotheses. Descartes explained that the test of an alleged truth is the
clarity with which it may be apprehended, or proven. "I think, therefore I am,"
(cogito ergo sum) is Descartes' famous example of the most clearly apprehended
truth. In effect, the evidence of thought proves the hypothesis of existence.
The answer is : The Civil War Era
