Who was the thirteenth-century muslim nomad (from the area that is present-day turkey) who founded the ottoman empire? (pgs 138-139) a. osman b. suleyman the magnificent c. ismail d. akbar

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.