Depressing to think anyone actually believes that Muslims- discovering- California garbage!
All they need is just a little historical revisionism for enough Muslims to believe, so they can justify "reclaiming" (ie, conquering) "Muslim land" from us filthy kuffar, and "revert" everything back to the good 'ole days of the darul Islam..
Note this article too:
“Not only were there African Muslims who were here in America as explorers before Christopher Columbus, but a third of the African slaves who were brought here during the slave trade were Muslims,”