Why doesn't the United States, as a superpower, unify the world?

The United States did not unify the world, mainly because it could not win. If it could not win, it could only use peaceful evolution, which is a slow method. Once it is discovered by its opponents, the effect will be relatively poor.

The United States later basically figured out that it is impossible to unify the world. With the military strength of the United States, it can bully small countries. Facing regional powers, it is clear that it cannot win.

Even if it can defeat its opponents, the United States will still face the difficulties of long-term security wars and governance of backward countries. It is also necessary to help backward countries develop their economies, otherwise terrorism and the continuous refugee crisis will gradually make the security in the areas controlled by the United States out of control. For example, this has happened in Afghanistan and Iraq, and the United States can only withdraw its troops in the end.

It is too difficult to govern backward countries, and it will also bring huge financial burdens to the United States itself. For example, in Afghanistan, the United States spends an average of $100 billion a year, and a total of $2.3 trillion in military expenditures, just to maintain basic security, not including the economic assistance provided by the United States and the investment of American companies. It is better to collect US dollar taxes directly, and earn a little bit. #BTC