Why did egypt’s main crops of papyrus and cereal best contribute to the development of civilization

Papyrus and cereals were very important commodities in Egypt in the ancient times because it provides both as a food and trading source. During those days trade made civilizations possible and expansion of agriculture became a necessity.

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.