B. The united states began to build up its military and stockpile weapons. Both the US and the USSR participated in whats known as the arms race where the US collected enough atomic bombs to destroy the earth 25 times.
To show his support for the federal government's authority to tax.
The Tang and Song rulers supported a new form of Confucianism called neo-Confucianism.
Explanation
Confucianist ideologies were popular in China from the period of Han dynasty itself. It was developed by Confucius in 551-479 BC. The influences of Taoist and Buddhist ideologies were strong during the reign of Tang and song rulers.
The Confucian scholars then integrated the elements of Taoism and Buddhism into a single ideology which came to be known as neo-Confucianism that gained the approval of the rulers.
Generally speaking, the chief executive is a member of the legislative branch in a "unitary form of government", since in this government there is only a single governing body.