What If California Became Its Own Country? If California were to secede from the US, it would become the world's fifth-largest economy, surpassing the UK and just behind Germany, with a GDP over $3 trillion. With a population of 40 million and a military of 217,000 personnel, it would be larger than Canada, Australia, and comparable in size to the UK. #California #Independence #UK #Australia #population #economy #gdp | Esploure Geo