How has the geography of Southwest Asia affected where people live and how
they trade? Where do most people live and why?
Which physical features make trade easier, and
which physical features make trade more difficult?

This is all I can answer, soz.

Well most people lived near to coast and near rivers and lakes because they could transport goods very easily by water.

answer; i believe the correct answer is enlightenment;

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.