The goal of the Allied powers after World War II was to restructure European society to ensure that individuals like Hitler could not rise to power again. This is why the Allied Powers split up Germany into 4 demilitarized zones. These four zones would be occupied by the four main Allied powers including the United States, Soviet Union, Great Britain, and France.
Along with splitting up Germany as a whole, these four allies during the war split up the capital of Germany (Berlin). Berlin was split into East and West Berlin, with East Berlin being controlled by the Soviet Union and West Berlin being controlled by the US, Great Britain, and France. The Allied powers would work together to create economic and political structures that would bring stability to Germany.
The best option is would be to prevent future acts of terrorism in the United States through coordination. It is the most important transformation of the US government by largely transforming and realigning government activities into a single department where the primary goal is to protect the United States of America.
The best option from the list would be the "British," but it should be noted that the French and Spanish were also early colonizers of the land that would become the US.
The National Marine Fisheries Administration is part of "federal" law enforcement, since it is technically a federal agency that is a "cabinet-level" department.
