It suffered from constant supply problems, largely as a result of underachievement in aircraft production. Germany's failure to defeat the RAF and secure control of the skies over southern England made invasion all but impossible.
The purpose of the Anaconda Plan was a political strategy to suppress the Confederacy during the Civil War. They wanted to essentially suppress them by "strangling" them at the ports and "suffocating" them passively, much like an anaconda.
A constitutional monarchy is where the governing powers of a monarch are restricted to the terms of a constitution. However, this can be a constitution that is written or unwritten and the monarch acts as a non-party political head of state. They can hold reserved powers. An absolute monarchy holds all powers over his or her people and everything going on in the country and has unrestricted political power.
They can be settled by wars where whoever wins, gets what they want. But a common way to solve a conflict is a negotiation. Countries will negotiate until they both are happy with the result.
hope that helped!