Unocal Corporation

Company History: Union Oil Company of California and Unocal Corporation, known as Unocal /ˈjuːnoʊkæl/ was a company that was a major petroleum explorer and marketer in the late 19th century, through the 20th century, and into the early 21st century. It was headquartered in El Segundo, California, United States.
Unocal was involved in domestic and global energy projects. Unocal was one of the key players in the CentGas consortium, which attempted to build the Trans-Afghanistan Pipeline to run from the Caspian area, through Afghanistan, to the Indian Ocean, at a time after the Taliban siege of Kabul in 1996.
On August 10, 2005, Unocal merged its entire upstream petroleum business with Chevron and became a wholly-owned subsidiary. Unocal then ceased operations as an independent company.From Wikipedia

Successor/Parent History: In 1985, Socal merged with the Pittsburgh-based Gulf Oil and rebranded as Chevron; the newly merged company later merged with Texaco in 2001. Chevron manufactures and sells fuels, lubricants, additives, and petrochemicals, primarily in Western North America, the US Gulf Coast, Southeast Asia, South Korea and Australia. In 2018, the company produced an average of 791,000 barrels (125,800 m3) of net oil-equivalent per day in United States.

Chevron is one of the largest companies in the world and the second-largest oil company based in the United States by revenue, only behind fellow Standard Oil descendant ExxonMobil. Chevron ranked 10th on the Fortune 500 in 2023. The company is also the last-remaining oil-and-gas component of the Dow Jones Industrial Average since ExxonMobil's exit from the index in 2020.

Brief History: The U.S. is a country of 50 states covering a vast swath of North America, with Alaska in the northwest and Hawaii extending the nation’s presence into the Pacific Ocean. Major Atlantic Coast cities are New York, a global finance and culture center, and capital Washington, DC. Midwestern metropolis Chicago is known for influential architecture and on the west coast, Los Angeles' Hollywood is famed for filmmaking.