What country north of chins is closest to the huang he river?

How did the opposing sides of the revolutionary war compare

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.

In 1870 which path would be the easiest to travel when going from omaha to sacramento a-mormon trail b-transcontinental railroad c-santa fe trail d-california trail