That the egyptians used a calendar, illustrates that the egyptians made great advances in what field?

Advances in Astronomy

Explanation:

The Egyptians using a calendar, illustrates that the Egyptians made great advances in astronomy.

If you put this answer at when you submit the Practice, the "Possible Answer" is Astronomy

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for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.

hello answer is b i hope that helepd.