Which statement about Medieval Christianity is true? A) Christianity did not spread beyond the borders of Italy and France.
B) Christianity was firmly established in western Europe.
C) Most Europeans belonged to the Eastern Orthodox Church.
D) Christianity became a dividing force in Europe.

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.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail