Why are Matthew and Mark similar in their portrayal of Jesus' life and teachings?

Matthew and Mark are similar in their portrayal of Jesus' life and teachings because they both focus on his actions and teachings rather than his background or personal life. They both emphasize Jesus' miracles, parables, and teachings on love, forgiveness, and salvation. Additionally, both Gospels highlight Jesus' role as the Son of God and the fulfillment of Old Testament prophecies.