In New land NewLife what most develops the theme that hard work pays off A the description of ruth B. the description on calvin C. The description o calvins wife D. The description of ruths boys

answer; i believe that the correct answer is ( rivers);

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.

answer; approx,300,000 ;