Thus the federal principle is designed to prevent the central government from becoming all-powerful, by leaving in the hands of smaller governmental units the authority to handle local affairs. No, it has to be a federal government of the world. A centralized one-world government, even democratically based, could very easily impose uniform standards and obligations on everyone without regard for individual rights or differing cultural or political values. Federal government, on the other hand, is based on the principle that local communities are best at solving local problems, regional government at solving regional problems and national government at solving national problems. World federal government is the application of this principle to problems, such as the environment or international terrorism, that do not respect national borders or sovereignty and cannot be solved by individual nations.
World government is the most ambitious method for creating world order.
There have been various theoretical schemes for world order, but none has had any chance of implementation. The closest the world has come to some form of world government has been the imperial ambitions of some leaders, such as Hitler in the twentieth century. These ambitions have meant that any talk of world government troubles people because of the prospect of a dictator of planet Earth. There is the challenge of creating a world order that enables humankind to deal with common problems but without creating a political system that will enslave the world under a dictator. A safer way of bringing people together on common solutions to common problems is to create some form of federation.