What was the important change in the constitution that was prompted by the results of the election of 1800

The results of the 1800 election prompted the adoption of his amendment since incumbent President John Adams and Thomas Jefferson ended up with the same number of electoral votes, and thus the House of Representatives was given the task under the Constitution of deciding the outcome.

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.