This document provides background information on Antonio Pigafetta and summarizes his account of Ferdinand Magellan's first circumnavigation of the world from 1519 to 1522. It discusses Pigafetta's role as a traveler who accompanied the expedition and documented it. His account provides important primary source material on their travels, including their arrival in the Philippines and encounters with local leaders. It also summarizes the establishment of the Katipunan secret society in the Philippines by Bonifacio to promote independence from Spain through revolution and education.