They preached every where — At the time St. Mark wrote, the apostles had already gone into all the known world, Romans 10:18; and each of them was there known where he preached: the name of Christ only was known throughout the world.
Related Commentaries of Mark 16:20
Mark 16:20
20 And they went forth, and preached every where, the Lord working with them, and confirming the word with signs following. Amen.