Which event marked the end of fighting during world war one

the treaty of Versailles

Explanation:

the treaty of Versailles was signed as a way to stop world war one and this day was called armistice day

they believed democracy was worth the fight

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.