It was A Mesopotamia let me guess you are in 5th grade I did the same thing as you when I was in your grade.<span />
They were surprised because President Johnson was a southerner. He also didn't have the best records on racial matters.
Hope this helped?
The correct answer is <span>legally guaranteed by the Constitution
According to the constitution, if people elect a president he will have powers that are enumerated in the constitution and that are not related to the house or the senate, since those are the legislative branch, or the supreme court since it's the judicial branch. The president is the head of the executive branch so his powers are his own while in accordance with the constitution.</span>