Hoover was one... but i don't know for sure if he was the first
Vice- President is the first in the line of succession for the presidency. Indeed such is the primary purpose for the office of vice-president.
Richard Nixon was the only President to resign from office on 9 August 1974.
He was the first president who got into office not by vote, but by the president dying (William Henry Harrison).
Yes, presidency is a common noun; a word for the office of a president, any president of anything. A common noun is only capitalized when it is the first word in a sentence.
The president is just one of three branches and can not do much without approval from the other branches. The office was not designed for Washington, but he was selected to be the first president.
Truman first became president when Franklin Roosevelt died in office.
Upon the death of President Harrison, John Tyler became the first vice president to assume the presidency. Tyler was nicknamed "His Accidency" by opponents because he seemed to gain the presidency by an accident of fate versus being elected to the office.
John Adams nominated George Washington for president. The Electoral College voted him into the office. He was the first President of the US.
There has been no female elected to the Office of Presidency yet. Hilary Clinton was the closest a female has ever been to holding this office.
General Dwight David Eisenhower.
William Henry Harrison died of pneumonia on April 4, 1841. John Tyler of Virginia became the first president to gain presidency because the elected president died in office.
He was the first Vice President to succeed to the presidency.