This is the flag of The Commonwealth of California. It comes from a world where the Constitution was never ratified, and the Articles of Confederation remained the primary governing document for the United States. Unfortunately, this meant that the federal government remained weak and ineffectual. The states soon began to question why they needed to take orders from Washington, and regionalist movements began to spring up. By the early 19th century the United States had completely collapsed. Each state became its own nation, with smaller states joining bigger ones either willingly or by force. Though the United States had failed as a nation, the idea of the United States inspired other colonies to rebel against their mother nations and seek independence.
The ideal of Manifest Destiny never really became a thing, but there was a general westward movement among the peoples of North America. However, how they got westward was considerably different than in our world. That brings us to California. It was primarily settled by British colonist from the Oregon Territory. This had multiple effects on California's development. For example, California is governed by a parliament, led by a prime minister, and the Queen's Birthday is a national holiday. California is also a proud member of the Commonwealth of Nations. Just as in our world California has a significant Mexican minority, and most Californians are bilingual.
California is one of the most prosperous nations in North America. It has a booming tech sector, and it's farms help feed people across North America. In the past California had a history in intervening in wars, but it has back off from that in more recent times. The big focus now is space exploration. California has launched multiple missions to the Moon and now there's talk of a possible Mars mission.
California's British heritage is very much reflected on its flag with the blue background and St. George's canton. The seal hearkens back to the early days of British settlement, all under the watchful eye of Britannia herself.