Can it be possible to say that access to water in the desert was the key to Californias emergence as such an economically significant state?
I would say so, since the cities of Southern California wouldn’t be possible without it. That said, even without the water, the state would still be pretty important because of its ports, because of its size, because of its natural resources, and because San Francisco would exist even if we Los Angelinos hadn’t been able to exploit the Owens Valley and Mono Lake for water.