Final answer:
Leonardo da Vinci was a talented man with expertise in various fields including art, science, and cartography. He taught himself much of what he knew and impressed others with his intricate map of an Italian city.
Step-by-step explanation:
Leonardo da Vinci was a talented man in various fields including art, science, math, and literature. He was a renowned painter, architect, scientist, mathematician, astronomer, botanist, writer, engineer, inventor, musician, and sculptor. Leonardo had an insatiable curiosity for knowledge and he taught himself much of what he knew.
He was able to impress a military general with his intricate map of an Italian city, showcasing his cartography skills.