The discovery of the Long Beach Oil Field, brought in by the gusher at the Alamitos No.
1 well, made Long Beach a major oil producer; in the 1920s the field was the most productive in the world.
Along with other Tongva villages, they were forced to relocate in the mid-19th century due to missionization, political change, and a drastic drop in population from exposure to European diseases.
In 1784 the Spanish Empire's King Carlos III granted Rancho Los Nietos to Spanish soldier Manuel Nieto.
On an island in the San Pedro Bay, Mormon pioneers made an abortive attempt to establish a colony (as part of Brigham Young's plan to establish a continuous chain of settlements from the Pacific to Salt Lake).
In 1866 Temple sold Rancho Los Cerritos for ,000 to the Northern California sheep-raising firm of Flint, Bixby & Co, which consisted of brothers Thomas and Benjamin Flint and their cousin Lewellyn Bixby.
Temple created a thriving cattle ranch and prospered, becoming the wealthiest man in Los Angeles County.
Both Temple and his ranch house played important local roles in the Mexican–American War.
The boundary between the two ranchos ran through the center of Signal Hill on a southwest to northeast diagonal.The Port of Long Beach is the second busiest container port in the United States and is among the world's largest shipping ports.The city also maintains a progressively declining oil industry with minor wells located both directly beneath the city as well as offshore.They had at least three major settlements within the present-day city.Tevaaxa'anga was an inland settlement near the Los Angeles River, while Ahwaanga and Povuu'nga were coastal villages.