In what way was the twelfth amendment important in the election of 1824?

The Twelfth Amendment of the United States Constitution states that when a presidential candidate doesn't receives the majority of the electoral votes, the decision will pass to the House of Representatives, where each state will have one vote.

The election of 1824 between John Quincy Adams , Andrew Jackson, Henry Clay and William Crawford is remembered as the only time in which according to The Twelfth Amendment since no one received the majority of electoral votes, the decision was passed to the House of Representatives. It was the only time when a presidential candidate (Andrew Jackson) that received most of the electoral votes was not elected president, because the majority of votes is required to win.

The House of Representatives elected John Quincy Adams as President of the United States.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion