After Vice President Spiro Agnew resigned from his office, Gerald Ford became the new vice president because of Section 2 of the 25th Amendment. This section allows the president to nominate a new vice president to be approved by Congress.
Step-by-step explanation:
If U.S. President/ vice-President resign or die or become disabled then what happens to presidency or vice-presidency. To this situation, answer is given in 25th Amendment of the U.S. Constitution. This amendment has 4 sections which provide for this contingency.
Section 2 of the Amendment states that in case of the office vice-president is vacant then nomination shall be made by the President and this nomination shall be confirmed the majority votes in Congress.