The document provides a history of California covering several topics:
1) Prior to European contact, around 300,000 Native Americans from over 20 linguistic groups inhabited the region, including fishing peoples along the coast and northwest as well as inland tribes.
2) Spanish explorer Vasco Nunez de Balboa first discovered the Pacific Ocean in 1513 while Ferdinand Magellan's expedition in 1519-1522 was the first to circumnavigate the globe, linking Spain and its colonies to Asia and establishing the route by which California would later be explored.
3) In the mid-1800s, it became national policy to build a transcontinental railroad to connect the eastern and western United States, and engineer Theodore Judah successfully