Balboas hacked a passage westward through the forests of Panama, Magellan travelled along South America looking for a bay leading to the pacific.
Step-by-step explanation:
Balboas a portuguese merchant identified and established a short and direct route to Asia which differs from Magellan's voyage. Because Magellan's route was long. Portuguese established number of trade points and key ports on the coast of sea. For that they surveyed the market condition near to the trade points and then established the key ports.
Balbaos hacked the westward passage throgh the forest of Central America (Panama canal). Magellan route was quite long because he travelled along South America to cover the Pacific ocean. He was looking for a bay.