Part 3/13:
Transitioning from a sleepy agricultural outpost, the early 1900s saw Los Angeles rapidly industrialize, driven by its rich natural resources and the oil discovery in 1892. The city became a leading oil-producing region, fueling economic developments including railroads and freeways. By the mid-20th century, Los Angeles was recognized as a major manufacturing hub, thanks to a booming aerospace industry and a flourishing population that necessitated improved infrastructure.