Why does California have the largest Hispanic-American population?
Because it was once a part of Mexico.
No. Alaska is the largest US state by area, and is not its own sovereign nation. California is the largest state by population, but it too is not its own sovereign nation. However it would be possible FOR California to be its own sovereign nation, because of its massive economy and population (california has the 8th largest economy in the world, about US$1.6 trillion, and the 34th largest population in the world)
California is the third largest state in the US, it is ranked first in population. As of 2008 estimates, California's population is 36,756,666. Idaho is the 14th largest state in the US, it is ranked 39th in population. As of 2008 estimates, Idaho's population is 1,523,816. So, to answer your question, California does have a bigger population than Idaho, and all other 48 states.