Could you contact the other schools that you turned down and see if your admission/scholarship could be reinstated? You might get lucky if one or more of the other schools had an underyield situation.
Other option is to remain at community college for another year, taking additional needed history courses (e.g. HIST 101 and 102) as listed on http://www.assist.org for every possible UC and CSU you may apply to and apply again. Though obviously a year delay is less desirable.