Alliances and treaties affected nations and colonies internationally.
The involvement of Alliances & treaties was what made both World War's truly <em>world wars</em>, as each nation was affected and were forced to honor their treaties. This is why in both cases, the nations tried to stop the war before it escalated too much, but both times failed.
Judicial Review is the power of the U.S. Supreme Court to review laws and actions from Congress and the President to determine whether they are constitutional. I hope its correct.