In the book it is refered to as California Bear Flag Republic. It is a "government" that resulted when Mexican rule in 1846 was overthrown. Captain John C. Fremont collaborated with American naval officers and with the local Americans, hoisted the banner of the short lived California Bear Republic.
P.G. 383, 384.
*I am unclear with this means, but that is what the book says, so I hope you get it :)