Where do scholars believe Homer came from? How did they reach that conclusion?

Modern scholars agree with the ancient sources only about Homer's general place of activity. The most concrete piece of ancient evidence is that his descendants, the Homeridae, lived on the Ionic island of Chios.

Ionia

Was Homer a real person? Scholars are uncertain whether he existed. If real, he is believed to have lived about the 9th or 8th century BCE and was a native of Ionia. A poet in the oral tradition, his works were likely transcribed by others.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.