Where did christianity mainly become established in the first 300 years of its existence?

a. the coastal areas, near cities
b. the countryside, away from the coast
c. the islands of the mediterranean sea
d. the mountains between italy and gaul

23. how does specialization among nations encourage interdependence? nations work together to share labor and resources to produce vital goods. nations sign treaties prohibiting taxes on imports. nations produce specific goods and then trade to obtain things they need. nations that are more developed agree to fund development in nations with limited industry.