My understanding of California's government and state as a whole is based largely on what I have been taught in University. We mainly focused on California when there were talks about a succession movement in 2016. From what I learned, California makes the majority of its money from taxes on the wealthy (stocks/investers) and it handling over a third of US import/exports. But if California were to leave the US, that share would dwindle drastically as the US tried to expand other ports and make new ports, rather than strike a deal with California. California's economy has also been tied to shifts in the stock market as it goes up and down, suggesting that if California left the US, it's businesses would be pulled from US stock markets, which could lead to a crash?