Answer:
In geometry, Ibn al-Haytham developed analytical geometry by establishing the linkage between algebra and geometry. Ibn al-Haytham also discovered a formula for adding the first 100 natural numbers. His contributions to number theory include his work on perfect numbers.
Works written: Book of Optics, Treatise on Light, ...
Place of death: Cairo, Egypt
Inventions: Pinhole camera
Profession: Scholar, Author
Aristocratic, or rich families, lived in large buildings
In geography, regions are areas that are broadly divided by physical characteristics(physical<span> geography), human impact </span>characteristics<span> (human geography), and the interaction of humanity and the environment (environmental geography).</span>
The answer is A (own at least twenty slaves)
