Probably after the Anschluss. Although Hitler had already violated the Treaty of Versaille by rebuilding Germany's military and moving troops into the Rhineland, the annexation of Austria was the first big territory takeovers and as a result of the Allies inability to punish Hitler for this violation of the Treaty of Versaille, it allowed him the momentum to quickly overtake Lithuania, Bohemia, Moravia, and Czechoslovakia. Which of course leads up to the invasion of Poland.
The supremacy clause located in Article VI of the Constitution recognizes treaties and laws passed by Congress are the supreme law of the land. The clause establishes that the federal constitution, and federal law generally, take precedence over state laws, and even state constitutions. This gives the national government an upper hand
Http://www.feldmeth.net/US/fandiwar.html
Website has good info.
Each Indian and French war had a purpose. Many were killed during the time they had colonized America. Many deaths but at the same time positive outcomes (Crops, Animals, Money, Trade route, etc.)
All of those are a part of Great Britain
Protect the US against threats
