According to auguste comte, people living in europe during the middle ages thought of society as

The best answer for the sentence in the missing blank would be:

an expression of God's will.

Society at the time were religious-oriented, and it is seen in their paintings and other artworks as well to represent how the nation respected the sayings of God. And up til' now religion has spreaded across the world with that belief.

Ifound this on google “separation of powers. a fundamental principle of the united states government, whereby powers and responsibilities are divided among the legislative branch, executive branch, and judicial branch.” i hope this you for what your looking for