California had an ancient system of paths made by migrating herds as they searched for food and salt. Native Americans later used these trails to hunt, gather, and trade for survival. European colonists improved these roads as they settled here. The Russians used coastal paths to hunt sea otters for fur. Spain claimed the West Coast and used a mission system comprised of El Camino Real, the main Spanish trail that was the center connection of the De Anza Trail, Pacheco Pass, and Hecker Pass Trails. These trails became the natural crossroads of California travel and settlement.