What amendment provides for a smooth transition of power to the vice president if the president dies, unable to perform his duties or leaves office

twenty-fifth amendment

Explanation:

The vice president serves as president if the president dies, leaves office, or is unable to fulfill his or her duties.

switch around #3 and #4

explanation:

i hope this , im not 100% on this i really hoped this

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;