How did the byzantines preserve roman and greek culture?

the byzantine empire was inhabited by greeks, however they considered themselves roman, the preservation was the continued use of latin and greek languages.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

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.