A key reason Inca rulers were able to keep their empire under strict central government control was that? A. everyone was able to read the same language
B. the extensive and carefully planned roads made it possible to reach all parts of the empire quickly
C. all of the people who lived in the empire had joined it voluntarily
D. the empire allowed its citizens a great deal of personal freedom

Which statement best explains the role of government according to thomas hobbes

Who was the top of the feudal system hierarchy

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.