What do you consider the two most important changes made from the articles to the constitution?

The implementation of checks and balances is a very important change from the Articles of ConfederationThe addition of the House of Representatives and the Senate was an extremely important change from the original government in the Articles of Confederation because it found a very good way to determine state representation.

Iwould say a, due to the fact these routes display many things that would be useful and provide explanations for how states are known.

Internal combustion engines