Stephen has been suffering from hypertension for the past few years and then had the stroke, which could have damaged or starved parts of his brain responsible for rendering speech and doing basic chores. He could be suffering from aphasia which directly affected his ability to find the right words and understand what others are trying to convey.
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In the seminal and terribly decided case of Plessy v. Ferguson, the Supreme Court determined that the separation of the races was permissible as long as the separate accommodations was separate but equal.
While this was nonsense in practice, it was the fiction that the Court hid behind.
House-slaves, living in their master's home and working at home, on the land or in a shop. Freelance slaves, who didn't live with their master but worked in their master's shop or fields and paid him taxes from money they got from their own properties (insofar as society allowed slaves to own property).
The Egyptians learend from the Romans
I think C) a map can show many points of the interest if a given area