B. Providing national defense
The U.S government was created to serve the interests of its people key of which is to protect and defend its people from all enemies, whether domestic or foreign. This is the basic function of government
There were two main reasons why Bush's approval ratings fell at the end of his presidency, the first being that the wars in Iraq and Afghanistan were wildly unpopular, and the second being that the US economy was struggling.
One of the main reasons why Andrew Johnson faced difficulty implementing his Reconstruction plans is because he face harsh opposition in Congress--both by Radical Republicans and Democrats alike.
