How did the relationship between Japan and the United States become strained leading up to the attack on Pearl Harbor?

Was the civil war inevitable? could anything have been done through compromise to stop it, or did it have to happen?

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.

How did cowboy culture reflect the ethnic diversity of the u.s.