Because of the wide variety of people
They wanted to ensure a strong government
The correct answer to the question above is that the United States appointed new leaders. When the United States allowed the new leaders, it allowed the new system of government in Japan which lead them following the World War II.
The comparison of an object to an abstract idea makes an idea more vivid. The comparison highlighting similarities between two or more unlike objects or ideas makes an argument stronger.
There are many things that Bush emphasized as a top us foreign policy objective, but he was most known for "fighting the war on terrorism" which led to lots of strikes overseas.