Answer:
"Conocer" is to have knowledge of the existence of something or someone (I know Carmen, or I know Paris) and "Saber" is to know something because you have learned it or because you have had news about it (I know English, I know tomorrow is coming).
sentences
Conocer:
-Yo conozco a la maestra de ingles.
Saber:
Yo se mucho sobre la historia de Estados Unidos.